Sotaro Karasawa
Angel Investor
Tokyo, Japan
Sotaro Karasawa is a seed investor in Tokyo focused on Software and Blockchain. Sotaro Karasawa - Chief Technology Officer @ STAR FESTIVAL
- Total investments:
- 9
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Sotaro Karasawa invests in
Stages Sotaro Karasawa invests in
Countries Sotaro Karasawa invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $109k–$14M
Investment Focus
Industry
- Software 3 (33%)
- Blockchain 2 (22%)
- Artificial Intelligence 2 (22%)
- Art 1 (11%)
- Content 1 (11%)
Stage
- Seed 4 (44%)
- Pre-Seed 2 (22%)
- Angel 1 (11%)
- Series A 1 (11%)
- Series B 1 (11%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Josan shes is web start up that offers nursing service to women and babies. | $2.6M / Series A / Sep 15, 2026 | ||
| OPERA Lead is a sales-focused AI web chatbot service from Opera Technology that turns websites into 24/7 "exhibit booths" for lead generation.It deploys AI sales assistants on existing sites (via simple tag embedding, no redesign needed) to engage the 99% of visitors who don't convert via inbound methods alone. Key capabilitiesinclude direct booking of meetings, guiding users to whitepapers/webinars, and targeted lead qualification for efficient deal progression. | $625.9K / Angel / Jun 01, 2025 | ||
| Cloudbase is an information technology company that specializes in the fields of cloud services and management. | $948.2K / Seed / Aug 24, 2022 | ||
| Taian, which specializes in bridal industry services and software. They also provide ''Concept Marry,'' which allows couples to design invites and seating charts that match their wedding theme, as well as display guest information on Oiwaii. | $432.1K / Pre-Seed / Oct 01, 2021 | ||
| 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. | $1.5M / Series B / Nov 06, 2020 | ||
| Anique is a service that utilizes blockchain technology to make artworks. | Seed / Dec 19, 2019 | ||
| FRAME00 is a blockchain technology startup developing a decentralized funding platform. Their product is an open-source middleware that fairly evaluates any activity and supports sustainability with staking. | Pre-Seed / Sep 26, 2019 | ||
| Elaly Technology makes life better for people around the world.We aim to make the value of money and the experience gained from it flatter.As many people as possible will use technology to realize a happier life, independent of the money economy. | $13.8M / Seed / Jul 24, 2019 | ||
| Rocketa is a news curation and social media platform. | $109.3K / Seed / May 09, 2019 |
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FAQ
What does Sotaro Karasawa invest in?
Sotaro Karasawa invests primarily in Software, Blockchain and Artificial Intelligence startups, most often at Seed and Pre-Seed stage. Most of the 9 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Sotaro Karasawa's check size?
Sotaro Karasawa typically joins rounds of $109k–$14M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Sotaro Karasawa participates in.
How do I contact Sotaro Karasawa?
Public channels for Sotaro Karasawa include LinkedIn. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Sotaro Karasawa last invest?
The most recent investment recorded for Sotaro Karasawa closed in Sep 2026. Shizune tracks 9 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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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