# Masahiro Kotosaka

> Masahiro Kotosaka is a angel investor at Euglena backing Education, EdTech and Fashion. See 3 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Euglena](https://shizune.co/investors/profile/euglena)
- Total investments: 3
- Last investment: Jan 2019
- Lead investor: 0%
- Last updated: Aug 2026
- X (Twitter): http://twitter.com/@kotosaka
- Facebook: https://www.facebook.com/kotosaka

Masahiro Kotosaka is an Associate Professor at Keio University and an Associate Fellow of The School for Advanced Studies in the Social Sciences. He is an expert in Internationalization strategy and early stage business development, and advisor to several global start-up companies. Before moving to Keio, he was an associate professor ofmultinational management at Ritsumeikan University, a teaching & research associate at the University of Oxford, and a consultant at McKinsey & Company based in Frankfurt and Tokyo. As a practitioner, he worked for strategy/marketing projects with sixteen client organizations across nine industries and nine countries and spent four years running three profitable IT/Retail businesses before joining McKinsey. He graduated from the University of Oxford with D.Phil. (Ph.D) in Management Studies and MSc in Management Research with Distinction.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Education | 2 | 67% |
| EdTech | 1 | 33% |
| Fashion | 1 | 33% |
| Lifestyle | 1 | 33% |
| E-Commerce | 1 | 33% |

10 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Angel | 2 | 67% |
| Funding Round | 1 | 33% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Kakedas | Kakedas specializes in the development and operation of web services. |  |  | Jan 31, 2019 |  |
| noFRAME schools | noFRAME schools is an EdTech startup is a mission to reinvent a textbook. |  | Angel | Jan 31, 2019 |  |
| One Nova | One Nova (ワンノバ) is a lifestyle brand and online platform that offers a range of innerwear products, such as men's boxers. | $2.8M | Angel | Aug 01, 2018 |  |

3 of 3 investments shown.

## Co-investors
- [NOW Japan](https://shizune.co/investors/profile/now-inc) — VC Fund, 2 deals together

## About Euglena

VC Fund · Tokyo, Japan

euglena Co., Ltd. engages in the research, development, production, and sale of microalgae with a focus on euglena. The company also manufactures and sells foods and cosmetics using euglena. It offers green juices, cookie bars, beverages, dietary supplements, and raw materials, as well as contract manufacturing/processing services; and skincare products.

5 contacts available at Euglena.

| Name | Title | Profile |
| --- | --- | --- |
| Mitsuru Izumo | Representative Director and President | https://shizune.co/investors/profile/mitsuru-izumo |
| Akihiko Nagata | Executive Vice President COO | https://shizune.co/investors/profile/akihiko-nagata |
| Daisuke Susa | Executive Officer | https://shizune.co/investors/profile/daisuke-susa |
| Junnosuke Awa | Executive Officer | https://shizune.co/investors/profile/junnosuke-awa |
| Kengo Suzuki | Co-Founder & Executive Officer Research and Development | https://shizune.co/investors/profile/kengo-suzuki |

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## Featured in investor lists
- [EdTech Angel Investors in Japan](https://shizune.co/investors/edtech-angel-investors-japan)
- [Fashion Angel Investors in Asia](https://shizune.co/investors/fashion-angel-investors-asia)
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- [Education Angel Investors in Japan](https://shizune.co/investors/education-angel-investors-japan)
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## FAQ

### What does Masahiro Kotosaka invest in?

Masahiro Kotosaka invests primarily in Education, EdTech and Fashion startups, most often at Angel and Funding Round stage. Most of the 3 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Masahiro Kotosaka last invest?

The most recent investment recorded for Masahiro Kotosaka closed in Jan 2019. Shizune tracks 3 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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