# Hajime Saito

> Hajime Saito is a Series C investor at Mizuho Capital (Tokyo) backing SaaS and Marketing. See 1 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Mizuho Capital](https://shizune.co/investors/profile/mizuho-capital)
- Location: Tokyo, Japan
- Total investments: 1
- Last investment: Dec 2017
- Lead investor: 0%
- Last updated: Aug 2026

Hajime Saito is a Series C investor at Mizuho Capital in Tokyo focused on SaaS and Marketing. Hajime Saito - President @ Mizuho Capital

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| SaaS | 1 | 100% |
| Marketing | 1 | 100% |
| Advertising | 1 | 100% |
| Crowdsourcing | 1 | 100% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Kaizen Platform | Kaizen is the full-service platform that enables marketing professionals to optimize digital customer experiences at scale without utilizing expensive internal resources. With a curated network of professionals and a technology-managed approach, Kaizen connects fragmented marketing tools and talent into one optimization ecosystem. | $4.6M | Series C | Dec 20, 2017 |  |

1 of 1 investments shown.

## Co-investors
- [Dentsu Innovation Partners](https://shizune.co/investors/profile/dentsu-innovation-partners) — VC Fund, 1 deal together
- [SBI Investment](https://shizune.co/investors/profile/sbi-investment-2) — VC Fund, 1 deal together
- [YJ Capital](https://shizune.co/investors/profile/yj-capital) — VC Fund, 1 deal together

## About Mizuho Capital

VC Fund · Tokyo, Japan

Mizuho is the venture capital firm affiliated to Mizuho Bank, the second-largest Japanese bank in terms of assets. The firm has headquarters in Tokyo.The firm has ¥49.6 billion JPY under management, focusing on information technology and biotechnology investments. Over 600 Mizuho companies have gone public. According to Nikkei, Mizuho is thefifth-largest venture capital firm in Japan.Mizuho Capital was formed in 2002 by the merger of Fujigin Capital, Tokyo Venture Capital and IBJ Investment. Three firms were subsidiaries of Fuji Bank, Dai-Ichi Kangyo Bank and the Industrial Bank of Japan respectively.

5 contacts available at Mizuho Capital.

| Name | Title | Profile |
| --- | --- | --- |
| Atsushi Sugao | Auditor | https://shizune.co/investors/profile/atsushi-sugao |
| Hajime Saito | President; President | https://shizune.co/investors/profile/hajime-saito |
| Hiroshi Oishi | Director | https://shizune.co/investors/profile/hiroshi-oishi |
| Hiroshi Yamamoto | Managing Director | https://shizune.co/investors/profile/hiroshi-yamamoto |
| Mitsumasa Matsumoto | General Manager, Investment Department | https://shizune.co/investors/profile/mitsumasa-matsumoto |

## Similar investors

### Similar stage
- [Sequoia Capital](https://shizune.co/investors/profile/sequoia-capital) — VC Fund
- [New Enterprise Associates](https://shizune.co/investors/profile/new-enterprise-associates) — VC Fund
- [Bessemer Venture Partners](https://shizune.co/investors/profile/bessemer-venture-partners) — VC Fund

## FAQ

### What does Hajime Saito invest in?

Hajime Saito invests primarily in SaaS, Marketing and Advertising startups, most often at Series C 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.

### When did Hajime Saito last invest?

The most recent investment recorded for Hajime Saito closed in Dec 2017. 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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