# Kenji Kasahara

> Kenji Kasahara is a seed investor at mixi (Shibuya) backing Information Technology and Aerospace. See 15 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [mixi](https://shizune.co/investors/profile/mixi)
- Location: Shibuya, Japan
- Total investments: 15
- Last investment: May 2026
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/kenji-kasahara-0a721
- X (Twitter): https://twitter.com/kasaharakenji
- Website: https://x.com/kasaharakenji
- Facebook: https://www.facebook.com/kenji.kasahara

Kenji Kasahara is a seed investor at mixi in Shibuya focused on Information Technology and Aerospace. Born in 1975, Kenji Kasahara grew up in Osaka Prefecture. He graduated from the Department of Economics at the University of Tokyo. Inspired by the case studies of IT business he studied in a university seminar on management strategy and by the rapid rise of Internet business in Silicon Valley in the USA, he started up “Find Job !”, an online jobinformation site, in 1997. In 1999 Kasahara established eMercury, Inc. (mixi, Inc.) and assumed the post of representative director.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $329k–$2.5M |
| Series A | $3.1M–$7.7M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Information Technology | 5 | 33% |
| Aerospace | 3 | 20% |
| Education | 3 | 20% |
| Travel | 2 | 13% |
| Robotics | 2 | 13% |

30 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 6 | 40% |
| Pre-Seed | 2 | 13% |
| Series A | 2 | 13% |
| Series B | 2 | 13% |
| Angel | 1 | 7% |

7 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Japan | 12 | 80% |
| United States | 2 | 13% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| AVIATE | AVIATE Inc. is a Tokyo-based technology startup that designs and builds AI-driven business automation systems. The company develops TASKBASE, an operational workflow layer that allows enterprise teams to run backend business operations entirely from natural language prompts. | $440.3K | Seed | May 21, 2026 |  |
| Voicetep | Voicetep is a unique dating app that enables users to begin meaningful connections without needing to share photos or exchange messages, instead fostering relationships through voice-based interactions that emphasize personality, authenticity, and genuine communication from the very first encounter. | $1.3M | Venture - Series Unknown | Nov 20, 2025 |  |
| Nicoli | Nicoli is a company that creates content and advertisements that increase happy time for parents and children . | $329.4K | Seed | Feb 10, 2025 |  |
| ONE | One is a Japanese startup. It primarily creates and operates consumer apps, some of which have been sold to publicly traded Japanese corporations.This runs the BeReal exchange application "BeMatch." | $1.2M | Seed | Jul 03, 2024 |  |
| Yondemy | Yondemy is an online platform for children reading books. | $880.7K | Seed | Mar 13, 2024 |  |
| Inspire High | Inspire High is an online school for 13-19 year olds to meet unanswered questions. | $3.1M | Series A | Dec 20, 2023 |  |
| AgeWell Japan | Age Well Japan is a conference and festival aimed at understanding Japan's super-aged society and defining new values for the future. The purpose of the gathering is to bring together young people and the elderly to exchange ideas. | $547.8K | Seed | Aug 04, 2021 |  |
| Firstcard | Firstcard provides a secured credit card and mobile app that helps users build credit with deposits and spending tracking tools. | $3M | Pre-Seed | Jun 01, 2021 |  |
| Atmoph | Atmoph is rethinking the way we connect with nature and information, in order to change quality of time at home better. Atmoph Window, the world’s first smart digital window, opens to beautiful scenery from around the world with 4K-shot videos and sounds. | $20.7M | Series B | Nov 06, 2020 |  |
| Toposware | Toposware is developing a fully interoperable blockchain ecosystem powered by zero-knowledge proofs. | $1.8M | Angel | May 08, 2020 |  |

10 of 15 investments shown.

## Co-investors
- [East Ventures](https://shizune.co/investors/profile/east-ventures) — VC Fund, 3 deals together
- [ANOBAKA](https://shizune.co/investors/profile/kvp) — VC Fund, 2 deals together
- [Z Venture Capital](https://shizune.co/investors/profile/z-venture-capital) — VC Fund, 2 deals together
- [Accord Ventures](https://shizune.co/investors/profile/accord-ventures) — VC Fund, 1 deal together
- [Akatsuki Games Inc.](https://shizune.co/investors/profile/akatsuki-3) — VC Fund, 1 deal together
- [ANRI](https://shizune.co/investors/profile/anri) — VC Fund, 1 deal together

## About mixi

VC Fund · Tokyo, Japan

Mixi is a Japanese social networking service that allows users to connect with their friends in a convenient way.It enables users to send and receive messages, write in a diary, read and comment on others' diaries, organize and join communities, and invite their friends.

5 contacts available at mixi.

| Name | Title | Profile |
| --- | --- | --- |
| Akinori Harada | Director | https://shizune.co/investors/profile/akinori-harada |
| Hiroyuki Osawa | Executive Officers CFO | https://shizune.co/investors/profile/osawa-hiroyuki |
| Hiroyuki Wakamatsu | Outside Audit & Supervisory Board Member | https://shizune.co/investors/profile/hiroyuki-wakamatsu |
| Keitaro Sato | President and CEO | https://shizune.co/investors/profile/keitaro-sato-fd96 |
| Kenji Kasahara | Chairman of the Board and Executive Officer | https://shizune.co/investors/profile/kenji-kasahara |

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## FAQ

### What does Kenji Kasahara invest in?

Kenji Kasahara invests primarily in Information Technology, Aerospace and Education startups, most often at Seed and Pre-Seed stage. Most of the 15 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Kenji Kasahara's check size?

Kenji Kasahara typically joins rounds of $329k–$2.5M at Seed and $3.1M–$7.7M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Kenji Kasahara participates in.

### When did Kenji Kasahara last invest?

The most recent investment recorded for Kenji Kasahara closed in May 2026. Shizune tracks 15 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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