![Katsushi Sakurai](https://cdn.zonebourse.com/static/resize/768/576//static/images/insiders/unknown.png)
Katsushi Sakurai
Private Equity Investor at Hamilton Lane /Japan/
Active connections
Name | Gender | Age | Linked companies | Collaboration |
---|---|---|---|---|
Makoto Takashima | M | 66 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 15 years |
Kiichiro Kobayashi | M | 66 |
Keio University
| 30 years |
Teiko Kudo | F | 60 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 10 years |
Keiji Kakumoto | M | 61 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 11 years |
Akira Haseyama | M | 72 |
Keio University
| 27 years |
Chiaki Tanioka | F | - |
Hamilton Lane /Japan/
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 8 years |
Hideyuki Tokuda | M | 71 |
Keio University
| 27 years |
Osamu Nakamura | M | 64 |
Keio University
| 27 years |
Haruhito Takada | M | 58 |
Keio University
| 29 years |
Atsuomi Obayashi | M | 63 |
Keio University
| 28 years |
Yasushi Seiki | M | 68 |
Keio University
| 26 years |
Masayoshi Yazawa | M | - |
Hamilton Lane /Japan/
| 10 years |
Jiro Tamura | M | 65 |
Keio University
| 27 years |
Tomoko Kitao | F | - |
Hamilton Lane /Japan/
| 12 years |
Connections Chart
Multi-company connection
Former connections
Name | Gender | Age | Linked companies | Collaboration |
---|---|---|---|---|
Toshikazu Yaku | M | 62 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 11 years |
Masayuki Oku | M | 79 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 10 years |
Toru Nakashima | M | 60 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Ryosuke Munakata | M | - |
Keio University
| 8 years |
Jun Ohta | M | 66 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 10 years |
Manabu Narita | M | 65 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Kozo Ogino | M | 66 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Yasuyuki Kawasaki | M | 65 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Toshiyuki Teramoto | M | - |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Shoji Masuda | M | 60 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Fumiharu Kozuka | M | 62 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Nobuaki Shindoh | M | - |
Keio University
| 6 years |
Atsuhiko Inoue | M | 67 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 15 years |
Toshiaki Nakai | M | 62 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Yozo Takigawa | M | 62 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Keiko Horkan | F | - |
Keio University
| 6 years |
Katsunori Tanizaki | M | 67 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Yukihiko Onishi | M | 64 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Hideki Fujita | M | - |
Keio University
| 6 years |
Haruyuki Nagata | M | 61 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Tetsuro Imaeda | M | 62 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Masafumi Kamishiro | M | - |
Keio University
| 6 years |
Kensaku Mizutani | M | 50 |
Keio University
| 6 years |
Atsushi Hino | M | 47 |
Keio University
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 14 years |
Masahiko Oshima | M | 63 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 11 years |
Koichi Kajima | M | 54 |
Keio University
| 6 years |
Hideo Shimada | M | 72 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | - |
Junsuke Fujii | M | 71 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 12 years |
Hattori Kyosuke | M | 49 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 12 years |
Suguru Kobayashi | M | 46 |
Keio University
| 4 years |
Shuichi Hayashi | M | 51 |
Keio University
| 4 years |
Taishiro Fujinaga | M | - |
Keio University
| 4 years |
Masahiro Kitao | M | - |
Keio University
| 3 years |
Takefumi Nishikawa | M | 53 |
Keio University
| 3 years |
Yuzuru Ikeda | M | - |
Keio University
| 4 years |
Nobu Takanuma | M | - |
Keio University
| 4 years |
Satoshi Kosugi | M | - |
Keio University
| 4 years |
Yuki Nakamura | F | 45 |
Keio University
| 4 years |
Jack Toyama | M | - |
Keio University
| 4 years |
Makoto Sorimachi | M | 44 |
Keio University
| 4 years |
Nao Ito | M | - |
Keio University
| 4 years |
Tak Sato | M | - |
Keio University
| 4 years |
Yuichiro Takenaka | M | 49 |
Keio University
| 4 years |
Takashi Sugiyama | M | 46 |
Keio University
| 4 years |
Aio Shibano | M | 48 |
Keio University
| 4 years |
Hiroaki Wakashita | M | - |
Keio University
| 4 years |
Daisuke Hiramoto | M | - |
Keio University
| 4 years |
Hiroe Kajiwara | F | - |
Keio University
| 4 years |
Minoru Fukuda | M | - |
Keio University
| 5 years |
Naoya Uchimura | M | - |
Keio University
| 4 years |
Kaz Kikuchi | M | - |
Keio University
| 4 years |
Eri Yokota | M | 63 |
Keio University
| 3 years |
Tadasuke Hosoya | M | 52 |
Keio University
| 4 years |
Kiichiro Nagashima | M | 46 |
Keio University
| 4 years |
Yusuke Hidaka | M | 50 |
Keio University
| 4 years |
Shigeru Uehara | M | 48 |
Keio University
| 4 years |
Kotaro Chiba | M | 50 |
Keio University
| 4 years |
Kazunori Sumioka | M | 50 |
Keio University
| 4 years |
Kuniaki Nomura | M | 79 |
Sumitomo Mitsui Banking Corp.
![]() Sumitomo Mitsui Banking Corp. Major BanksFinance Sumitomo Mitsui Banking Corp. engages in the provision of financial services centered on banking. It operates through the following business segments: Wholesale, Retail, International, Market Sales, and Headquarters Management. The Wholesale segment covers business for customers of large and medium-sized companies in Japan. The Retail segment handles business for domestic individuals and SME customers. The International segment comprises of business for overseas Japanese and non-Japanese companies. The Market Sales segment corresponds to financial market business. The Headquarters Management segment includes all other businesses not covered by other segments. The company was founded in April 2001 and is headquartered in Tokyo, Japan. | 6 years |
Hideaki Nagamori | M | 52 |
Keio University
| 4 years |
Takashi Kawano | M | 51 |
Keio University
| 4 years |
Yasuhiro Ogino | M | 50 |
Keio University
| 4 years |
Hirokazu Nagai | M | 52 |
Keio University
| 4 years |
Atsushi Shionozaki | M | - |
Keio University
| 3 years |
Naoki Aoyagi | M | 44 |
Keio University
| 4 years |
Masahiko Honma | M | - |
Keio University
| 4 years |
Takeshi Ono | M | 44 |
Keio University
| 4 years |
Kenichiro Nakamura | M | 47 |
Keio University
| 4 years |
Masanao Senoo | M | - |
Keio University
| 4 years |
Mariko Nakagiri | F | 49 |
Keio University
| 4 years |
Ryusuke Taniyama | M | - |
Keio University
| 4 years |
Tamotsu Hayashida | M | - |
Keio University
| 3 years |
Ayako Kato | F | 45 |
Keio University
| 4 years |
Ken Suzuki | M | - |
Keio University
| 4 years |
Misato Yamaura | F | - |
Keio University
| 4 years |
Takahisa Toyomasu | M | 49 |
Keio University
| 4 years |
Yosuke Tamura | M | 50 |
Keio University
| 3 years |
Koji Kuchiishi | M | 53 |
Keio University
| 4 years |
Utako Kojima | F | - |
Keio University
| 4 years |
Masaru Sunagawa | M | - |
Keio University
| 4 years |
Chikahiro Terada | M | 47 |
Keio University
| 4 years |
Tetsuro Oshita | M | 48 |
Keio University
| 4 years |
Shingo Omura | M | - |
Keio University
| 4 years |
Kenji Kobuse | M | - |
Keio University
| 4 years |
Yasunori Yoshimura | M | 75 |
Keio University
| 19 years |
Nobuhiro Takagi | M | 45 |
Keio University
| 4 years |
Statistics
Country | Connections | % of total |
---|---|---|
Japan | 100 | 100.00% |
Age of Connections
Active
Past
Male
Female
Members of the board
Executives
Origin of connections
- Stock Market
- Insiders
- Katsushi Sakurai
- Personal Network