# Masaya Kayumi

> Masaya Kayumi is a Series A investor at DIMENSION (Tokyo) backing Social Network. See 1 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [DIMENSION](https://shizune.co/investors/profile/dimension-0ef6)
- Location: Tokyo, Japan
- Total investments: 1
- Last investment: Oct 2023
- Lead investor: 100%
- Last updated: Aug 2026
- Website: https://www.dimensionfund.co.jp/team/masaya-kayumi/

Masaya Kayumi is an Business Producer at DIMENSION.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| TapNow | TapNow is a social networking platform. | $1.3M | Series A | Oct 16, 2023 |  |

1 of 1 investments shown.

## Co-investors
- [SBI Investment](https://shizune.co/investors/profile/sbi-investment-2) — VC Fund, 1 deal together

## About DIMENSION

VC Fund · Kasumigaseki, Japan

DIMENSION is an investment fund management company.

3 contacts available at DIMENSION.

| Name | Title | Profile |
| --- | --- | --- |
| Furuya Hirodai | Executive | https://shizune.co/investors/profile/furuya-hirodai |
| Ito Noriyuki | Business Producer | https://shizune.co/investors/profile/ito-noriyuki |
| Masaya Kayumi | Business Producer | https://shizune.co/investors/profile/masaya-kayumi |

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## FAQ

### What does Masaya Kayumi invest in?

Masaya Kayumi invests primarily in Social Network startups, most often at Series A 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 Masaya Kayumi last invest?

The most recent investment recorded for Masaya Kayumi closed in Oct 2023. 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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