Nextblue
VC Fund
Tokyo, Japan
Nextblue is an early-stage focused VC based in Japan deploying in Japan, EU, and the US. NB fund II is investing in pre-seed, seed and pre-A startups in healthtech, femtech, or female-led startups innovating in the fields of fintech, consumer, and B2B SaaS. We also run our own co-working space in the heart of Tokyo called Nexthub (nexthub.jp) EUand US startups: Reach out to Vincent at Vincent@nextblue.com Japan: Kanako at Kanako@nextblue.com
- Total investments:
- 32
- Last investment:
- Lead investor:
- 19%
- Fund size:
- $40M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Nextblue invests in
Stages Nextblue invests in
Countries Nextblue invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Round size
- Seed
- $454k–$4.3M
- Pre-Seed
- $1M–$3.2M
- Series A
- $2.6M–$18M
Investment Focus
Industry
- Software 7 (22%)
- Women's 5 (16%)
- Information Technology 5 (16%)
- Health Care 4 (13%)
- Personal Health 3 (9%)
Stage
- Seed 12 (38%)
- Pre-Seed 10 (31%)
- Series A 4 (13%)
- Series B 1 (3%)
- Funding Round 1 (3%)
Country
- Japan 11 (34%)
- United States 5 (16%)
- United Kingdom 4 (13%)
- Germany 2 (6%)
- Canada 1 (3%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Yuichi Kori
Partner
|
Partner | Total investments: 7 | Find email | |
Saki Oshima
Partner
|
Partner | Total investments: 1 | Find email | |
|
Yuichi Gun
Representative Partner
|
Representative Partner | Total investments: 2 | Find email |
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 | ||
| YStory is a digital health firm that uses AI and medical science to improve women's health during menopause. | Seed / Apr 27, 2026 | ||
| Sage Haven develops an AI-moderated messaging and calling app designed for children in their early years online. The app issues children a dedicated Sage Haven number and routes messaging and voice calls through its platform while allowing contacts to use services like iMessage or Google Messages. Parents create and verify accounts, approve eachcontact, and supervise conversations from their own phones with alerts, recaps, and safety insights. The service uses automated content moderation to block harmful or inappropriate messages, links, images, and videos before they are sent and to guide children toward safer communication practices. It supports Wi-Fi and cellular use on iOS devices, with tools aimed at reducing exposure to online bullying, spam, and addictive usage patterns. Sage Haven operates as a public benefit corporation balancing commercial activity with a mission to improve children’s mental health and well-being. | $3M / Pre-Seed / Apr 16, 2026 | ||
| bgrass is a consultation support platform for women working in the IT industry. | $846.1K / Seed / Aug 19, 2025 | ||
| Eli empowers women to understand their body and the transitions it goes through every day, and across life. We develop a device that uses saliva to capture hormone fluctuations at home, and an app that gives women the information they want to own their health decisions. | $12M / Series A / Jun 10, 2025 | ||
| Designed by scientists, technologists, and parents in collaboration with leading clinicians, Trellis bridges critical gaps in women’s healthcare with intuitive tools that simplify health management over time. Through personalized recommendations, tailored insights, and seamless tracking, Trellis enables women to make informed decisions about theirhealth - without carrying the mental load of connecting the dots. | $1.8M / Pre-Seed / Apr 17, 2025 | ||
| Josan shes is web start up that offers nursing service to women and babies. | $980.5K / Seed / Feb 13, 2025 | ||
| Exactly.ai is an artwork creation platform. It allows users to create their personal AI models trained on their work and publish them. | $4.3M / Seed / May 30, 2024 | ||
| SecureNavi offers automation tools for the information security management system. It reduces conventional analogue operations using excel and word. For inquiries, telephone numbers and physical addresses are available on their website. | $3M / Series A / Nov 15, 2023 | ||
| Nūmi mission to redefine health through groundbreaking research making the unparalleled benefits of breast milk accessible to all. | $3.2M / Pre-Seed / Nov 03, 2023 | ||
| See all 32 investments → | |||
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FAQ
What does Nextblue invest in?
Nextblue invests primarily in Software, Women's and Information Technology startups, most often at Seed and Pre-Seed stage. Most of the 32 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Nextblue's check size?
Nextblue typically joins rounds of $454k–$4.3M at Seed, $1M–$3.2M at Pre-Seed and $2.6M–$18M 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 Nextblue participates in.
How do I contact Nextblue?
Public channels for Nextblue include LinkedIn and the website linked on this profile. 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.
Who are the partners at Nextblue?
The team at Nextblue includes Yuichi Kori (Partner), Saki Oshima (Partner) and Yuichi Gun (Representative Partner). The Team section lists each member with their title, investment count and links.
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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