# Ryohei Shirai

> Ryohei Shirai is a Series A investor at ABC Dream Ventures (Osaka) backing Video and Google. See 4 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [ABC Dream Ventures](https://shizune.co/investors/profile/abc-dreamventures)
- Location: Osaka, Japan
- Total investments: 4
- Last investment: Oct 2021
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/shirai-ryohei-75629852

Ryohei Shirai is a Series A investor at ABC Dream Ventures in Osaka focused on Video and Google. Ryohei Shirai - Venture Partner @ ABC Dream Ventures

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Video | 1 | 25% |
| Google | 1 | 25% |
| Big Data | 1 | 25% |
| Software | 1 | 25% |
| Blockchain | 1 | 25% |

12 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 1 | 25% |
| Series B | 1 | 25% |
| Series C | 1 | 25% |
| Series D | 1 | 25% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Japan | 1 | 25% |
| Singapore | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Sentient.io | Sentient.io AI models, microservices, and datasets are readily available through APIs on the Sentient AI & Data Cloud Platform for easy discovery. They utilize curated public and private datasets and pre-trained and industry-proven models. The company provides unique benefits to software developers looking to create AI-enabled applications orAI-driven services by embedding AI capabilities into their applications and for enterprises by making scalability a core and enabling easy extension to existing applications. |  | Series B | Oct 27, 2021 |  |
| BitStar | BitStar is the EnterTech company that accelerates the growth of video creators and content with our proprietary data and technology. | $122.4M | Series D | Aug 17, 2020 |  |
| Sentient.io | Sentient.io AI models, microservices, and datasets are readily available through APIs on the Sentient AI & Data Cloud Platform for easy discovery. They utilize curated public and private datasets and pre-trained and industry-proven models. The company provides unique benefits to software developers looking to create AI-enabled applications orAI-driven services by embedding AI capabilities into their applications and for enterprises by making scalability a core and enabling easy extension to existing applications. | $3.7M | Series A | Oct 01, 2019 |  |
| BitStar | BitStar is the EnterTech company that accelerates the growth of video creators and content with our proprietary data and technology. | $152.1M | Series C | Aug 20, 2018 |  |

4 of 4 investments shown.

## Co-investors
- [Colopl Next](https://shizune.co/investors/profile/colopl-next) — VC Fund, 2 deals together
- [DG VENTURES](https://shizune.co/investors/profile/dg-incubation) — VC Fund, 2 deals together
- [BEENEXT](https://shizune.co/investors/profile/bee-next) — VC Fund, 1 deal together
- [BeMap](https://shizune.co/investors/profile/bemap) — VC Fund, 1 deal together
- [Dentsu Group](https://shizune.co/investors/profile/dentsu-group) — VC Fund, 1 deal together
- [DG Lab](https://shizune.co/investors/profile/dg-lab-fund) — VC Fund, 1 deal together

## About ABC Dream Ventures

VC Fund · Osaka, Japan

ABC Dream Ventures is the corporate venture capital arm of Japanese media firm Asahi Broadcasting Group Holdings.

4 contacts available at ABC Dream Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Akihiro Ueda | General Partner | https://shizune.co/investors/profile/akihiro-ueda-2 |
| Naoto Obama | President and Representative Director | https://shizune.co/investors/profile/naoto-obama |
| Ryohei Shirai | Venture Partner | https://shizune.co/investors/profile/ryohei-shirai |
| Goro Ishizaki | President and CEO | https://shizune.co/investors/profile/goro-ishizaki |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund

## FAQ

### What does Ryohei Shirai invest in?

Ryohei Shirai invests primarily in Video, Google and Big Data startups, most often at Series A and Series B stage. Most of the 4 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Ryohei Shirai last invest?

The most recent investment recorded for Ryohei Shirai closed in Oct 2021. Shizune tracks 4 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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