# Rooftop

> Rooftop is a VC fund backing Machine Learning and Artificial Intelligence. See 1 investment, round sizes, portfolio. Updated Aug 2026.

- Type: VC Fund
- Total investments: 1
- Last investment: Dec 2023
- Lead investor: 0%
- Last updated: Aug 2026
- Website: https://www.rftp.jp

Rooftop is an acceleration program that provides advice from a professional perspective on accelerating the growth of startups.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Machine Learning | 1 | 100% |
| Artificial Intelligence | 1 | 100% |
| Information and Communications Technology (ICT) | 1 | 100% |

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Miibo | miibo is an AI construction platform that allows businesses to develop conversational AI bots for their products and websites. | $407.7K | Seed | Dec 06, 2023 | https://miibo.jp/ |

1 of 1 investments shown.

## Co-investors
- [DNX Ventures](https://shizune.co/investors/profile/dnx-ventures) — VC Fund, 1 deal together
- [Kyoto University of the Arts](https://shizune.co/investors/profile/kyoto-university-of-the-arts) — VC Fund, 1 deal together

## Similar investors

### Similar industry
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### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
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### Similar country
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- [Mizuho Capital](https://shizune.co/investors/profile/mizuho-capital) — VC Fund

## Featured in investor lists
- [Machine Learning VC Funds in Japan](https://shizune.co/investors/machine-learning-vc-funds-japan)

## FAQ

### What does Rooftop invest in?

Rooftop invests primarily in Machine Learning, Artificial Intelligence and Information and Communications Technology (ICT) startups, most often at Seed 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 Rooftop last invest?

The most recent investment recorded for Rooftop closed in Dec 2023. Shizune tracks 1 investment 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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