# Sadoshima Ryuhei

> Sadoshima Ryuhei is a seed investor at Safie (Tokyo) backing Health Care and Fitness. See 4 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Safie](https://shizune.co/investors/profile/sefie)
- Location: Tokyo, Japan
- Total investments: 4
- Last investment: Feb 2025
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/sadoshima-ryuhei-9230b3101/

Sadoshima Ryuhei is a seed investor at Safie in Tokyo focused on Health Care and Fitness. Sadoshima Ryuhei - President & CEO @ Safie

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Health Care | 3 | 75% |
| Fitness | 2 | 50% |
| Information Technology | 2 | 50% |
| PaaS | 1 | 25% |
| Internet | 1 | 25% |

12 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 2 | 50% |
| Series A | 1 | 25% |
| Series B | 1 | 25% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Japan | 2 | 50% |
| United States | 2 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| MODE | With offices in both San Mateo, California, and Tokyo, Japan. The company is rapidly growing with now over fifty employees and is in business to provide end-to-end semi-custom IoT and AI solutions for organizations to improve their operations by connecting them to their data, giving them “real-time” insights, so they can turn innovative ideas intosustainable solutions that address a wide range of challenges.Simple, yet powerful, our latest "next generation" BizStack IoT and BizStack AI solutions are comprised of a continuous improvement technology stack that collects real-time data from any sensor, device, product, equipment, or legacy system. The data is then sanitized, uniquely structured, and provided to highly customizable, intuitive dashboards with powerful insights, along with proper security in the cloud for ongoing IoT and AI applications.BizStack can be deployed 4X faster and 75% less expensively than in-house developers or outside consultants. | $5.2M | Series B | Feb 12, 2025 |  |
| Voxela, Inc. | We make aging beautiful. Voxela improves QOL and profitability of those eldercare businesses for a sustainable society. |  | Seed | Oct 21, 2024 |  |
| Opt Fit | Opt Fit is a fitness industry that provides fitness, wellness and health-care services. | $892K | Series A | Jan 10, 2024 |  |
| FiT | FiT encourages the use of information technology in fitness to address industrial concerns. We will build a highly sustainable fitness facility using a business model that allows consumers to easily use the gym without being burdened by price or procedures, while also allowing owners to build a very successful business with low running costs. | $875.3K | Seed | Aug 24, 2022 |  |

4 of 4 investments shown.

## Co-investors
- [All Star SAAS Fund](https://shizune.co/investors/profile/all-star-saas-fund) — VC Fund, 2 deals together
- [Archetype Ventures](https://shizune.co/investors/profile/archetype-ventures) — VC Fund, 2 deals together
- [XTech Ventures](https://shizune.co/investors/profile/xtech-ventures) — VC Fund, 2 deals together
- [Canon Marketing Japan](https://shizune.co/investors/profile/canon-marketing-japan) — VC Fund, 1 deal together
- [Global Brain Corporation](https://shizune.co/investors/profile/global-brain-corporation) — VC Fund, 1 deal together
- [KDDI Open Innovation Fund](https://shizune.co/investors/profile/kddi-open-innovation-fund) — VC Fund, 1 deal together

## About Safie

VC Fund · Tokyo, Japan

Safie is a smart security cameras and home security of the smartphone.

5 contacts available at Safie.

| Name | Title | Profile |
| --- | --- | --- |
| Sadoshima Ryuhei | President & CEO | https://shizune.co/investors/profile/sadoshima-ryuhei |
| Hiroyuki Ishinaga | Outside Director | https://shizune.co/investors/profile/hiroyuki-ishinaga |
| Katsumi Kudo | Auditor | https://shizune.co/investors/profile/katsumi-kudo |
| Kazuma Morimoto | cto / engineer | https://shizune.co/investors/profile/kazuma-morimoto |
| Moriaki Shimozaki | Co-Founder,CTO & Director | https://shizune.co/investors/profile/moriaki-shimozaki |

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## FAQ

### What does Sadoshima Ryuhei invest in?

Sadoshima Ryuhei invests primarily in Health Care, Fitness and Information Technology startups, most often at Seed and Series A 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 Sadoshima Ryuhei last invest?

The most recent investment recorded for Sadoshima Ryuhei closed in Feb 2025. 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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