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The Venture Codex

NEXTBLUE

x-Bridge-Global, 2/F, 3-1-3 Nihonbashi, Tokyo, Chuo-ku, Japan

Overview

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) EU and US startups: Reach out to Vincent at Vincent@nextblue.com Japan: Kanako at Kanako@nextblue.com

Total investments
8
Lead investments
0
Investments · 12mo
1
Active investors
2

Sector focus

  • Apps
  • Consumer Software
  • Health Care
  • Internet
  • SaaS
  • Software
Visit website

Investment portfolio

  • Sage Haven

    Participated · Seed · Apr 2026

    Sage Haven offers a messaging and voice calling app designed as a slow, protected on-ramp for children’s first years online. The product includes AI moderation that blocks harmful messages before they are sent, AI nudges to encourage kinder communication, and a parent hub that lets caregivers approve contacts, monitor messages, and receive AI-powered alerts and weekly recaps. Children receive a free Sage Haven number that aggregates messages from iMessage, Google Messages, and other platforms so kids are protected regardless of what other families use. The company was founded and is led by Kate Doerksen and her sister Anne (Anne Pizzuti) and announced it is live following a beta period. Sage Haven is registered as a Public Benefit Corporation to legally prioritize kids’ mental health and well-being. The articles do not provide revenue, user, or valuation metrics.

  • bgrass

    Participated · Series A · Aug 2025

    bgrass runs WAKE Career, a career-change support service specializing in female engineers, and WAKE Freelance, a freelance matching service launched in July 2025. Its user support combines interviews, study sessions, and hackathons to help users take on challenges and experience success. Job-posting companies undergo a proprietary "Gender Diversity Diagnosis" to visualize organizational issues. The company is developing an AI-driven tool tentatively named FairPass to detect unconscious bias in hiring, analyze selection data, and surface bottlenecks. bgrass reports an increase in user numbers since launch and says the new funding will be used to strengthen user acquisition and scale both individual support and corporate structural reform. The stated vision is to eliminate bias-driven disparities and make fair evaluation the norm.

  • Trellis Health

    Participated · Seed · Apr 2025

    Trellis Health is launching an AI-driven digital health platform to empower women with personalized, proactive care across pregnancy, postpartum, and lifetime health. The product integrates years of an individual’s medical history and fragmented health data into actionable, easy-to-understand timelines and intelligent insights. Trellis connects to more than 50,000 healthcare providers nationwide to provide deeper context and continuous support. The company positions itself as a modern-day family doctor, offering personalized guidance, provider partnerships, and data-driven care solutions to reduce fragmentation. Founders Estelle Giraud and CTO Ryan Nabat are building the platform with an emphasis on privacy and security, leveraging Giraud’s background in genomics and consumer health data. Trellis launched from stealth with initial funding to develop an operating system for women’s lifetime health and to enable generational, proactive care.

  • SecureNavi

    Participated · Series A · Nov 2023

    SecureNavi digitizes the traditionally manual “humanities security” tasks such as ISMS certification, P-Mark acquisition, regulation compliance, policy development, audits, and inspections. Its core offerings include a service suite that simplifies obtaining and operating information-security certifications for more than 1,200 corporate customers, as well as the Fit&Gap platform that automates security regulation compliance. The company recently unveiled “Takumi Cloud for the Second Line,” a platform designed around the international Three Lines Model to help second-line governance teams standardize and automate risk assessments across contractors, systems, and group companies. Preliminary trials of Takumi Cloud span industries like pharmaceuticals, telecom, finance, manufacturing, IT, distribution, food service, and HR. SecureNavi reports that revenue has climbed roughly 3.5× since its previous funding round, indicating rapid commercial traction. The firm plans to invest heavily in product development, expand its engineering team, step up recruiting, and increase marketing spend to accelerate digital transformation in security compliance.

  • Bento

    Participated · Seed · Feb 2023

    Bento provides well-designed, responsive link-in-bio pages with widgets that users can resize and reorganize on both mobile and desktop. The platform auto-generates rich previews from added links and offers preview customizations such as last three LinkedIn jobs, recent Instagram photos and latest GitHub projects. Bento lets creators upload media files (including video) and plans to enable in-page content consumption, for example playing YouTube videos without leaving the site. The company is beginning to roll out monetization features, launching donation widgets this week and planning product offerings; initially Bento will not take a cut of donations. Longer-term roadmaps include community-building features and additional commerce tools to help creators earn directly from their audiences. Bento operates in a crowded space that includes Linktree, Beacon, Snipfeed and several others; the team positions the product as a destination rather than a router to other platforms.

Team

  • Yuichi Kori

    Partner

    LinkedIn
  • Yuichi Gun

    Representative Partner