# Rintaro Oyaizu

> Rintaro Oyaizu is a seed investor at CyberAgent America backing Beauty. See 1 investments, check sizes, portfolio and contact details. Updated Sep 2026.

- Type: Angel Investor
- Fund: CyberAgent America
- Location: Tokyo, Japan
- Total investments: 1
- Last investment: Jul 2020
- Lead investor: 0%
- Last updated: Sep 2026
- LinkedIn: https://www.linkedin.com/in/rintaro-oyaizu-842412a3/
- Website: https://x.com/mcrin72
- Facebook: https://www.facebook.com/rintaro.oyaizu

Rintaro Oyaizu is a CEO at CyberAgent, Inc. He attended Keio University.

## Contacts

5 contacts available for Rintaro Oyaizu: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/rintaro-oyaizu?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Beauty | 1 | 100% |
| Medical | 1 | 100% |
| Women's | 1 | 100% |
| Wellness | 1 | 100% |
| Health Care | 1 | 100% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Mederi | Mederi keeps creating services that encourage mental and physical harmony while pursuing safety and peace of mind. The company offers a social safety net that fully supports female employees' health concerns. | $283.4K | Seed | Jul 31, 2020 |  |

1 of 1 investments shown.

## Co-investors
- [Maezawa Fund](https://shizune.co/investors/profile/maezawa-fund) — VC Fund, 1 deal together
- [TLM](https://shizune.co/investors/profile/tlm) — VC Fund, 1 deal together

## About CyberAgent America

VC Fund



1 contacts available at CyberAgent America.

| Name | Title | Profile |
| --- | --- | --- |
| Rintaro Oyaizu | CEO | https://shizune.co/investors/profile/rintaro-oyaizu |

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## Featured in investor lists
- [Beauty Angel Investors in Japan](https://shizune.co/investors/beauty-angel-investors-japan)
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## FAQ

### What does Rintaro Oyaizu invest in?

Rintaro Oyaizu invests primarily in Beauty, Medical and Women's startups, most often at Seed stage. Most of the 1 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Rintaro Oyaizu?

Public channels for Rintaro Oyaizu include LinkedIn, the website linked on this profile and Facebook. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### When did Rintaro Oyaizu last invest?

The most recent investment recorded for Rintaro Oyaizu closed in Jul 2020. Shizune tracks 1 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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