# Hiroyuki Wakamatsu

> Hiroyuki Wakamatsu is a startup investor at mixi. See 0 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [mixi](https://shizune.co/investors/profile/mixi)
- Last updated: Aug 2026

Hiroyuki Wakamatsu is a startup investor at mixi. Graduated from the Universiety of Tokyo. Running an accounting firm.

## About mixi

VC Fund · Tokyo, Japan

Mixi is a Japanese social networking service that allows users to connect with their friends in a convenient way.It enables users to send and receive messages, write in a diary, read and comment on others' diaries, organize and join communities, and invite their friends.

5 contacts available at mixi.

| Name | Title | Profile |
| --- | --- | --- |
| Akinori Harada | Director | https://shizune.co/investors/profile/akinori-harada |
| Hiroyuki Osawa | Executive Officers CFO | https://shizune.co/investors/profile/osawa-hiroyuki |
| Hiroyuki Wakamatsu | Outside Audit & Supervisory Board Member | https://shizune.co/investors/profile/hiroyuki-wakamatsu |
| Keitaro Sato | President and CEO | https://shizune.co/investors/profile/keitaro-sato-fd96 |
| Kenji Kasahara | Chairman of the Board and Executive Officer | https://shizune.co/investors/profile/kenji-kasahara |

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