Kunihisa Miyamoto Angel Investor
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Portfolio

Portfolio

29 seed-stage investments across AI, SaaS, platforms, DX, and fintech — backing founders who aim to build the next generation of listed companies from Japan.

994
Companies Met
29
Investments Made
¥4.37B
Total Invested
12
VC LP Commitments

PRIMARILY SEED STAGE · QUALIFIED INSTITUTIONAL INVESTOR

Featured Investments

Portfolio highlights

Named investments that have been publicly shared. The majority of portfolio companies remain confidential at the founders' request.

KB-eye (ケイビーアイ)
AI-powered security company co-founded by Akiyama (20+ years in the security industry) and Kitsuda (AI specialist). Appeared on TV show "REAL VALUE" and received the highest-ever corporate valuation in the program's history — ¥100 billion. Invested June 2022.
AI Security Seed 2022
Cowmel (カウメル)
Identified as a unicorn candidate. Received follow-on investment based on an outstanding management team and strong growth trajectory. Exceptional team construction cited as the primary reason for continued backing.
Platform Unicorn Candidate Follow-on
All Investments

Portfolio by sector

29 companies across 9 sectors. Most companies remain unnamed at the founders' request — grouped here by category.

All AI SaaS Platform DX D2C Other
KB-eye (ケイビーアイ)
AI-powered security company. Received the highest-ever corporate valuation of ¥100B on TV show "REAL VALUE." Co-founded by a 20-year security industry veteran and an AI specialist. Invested June 2022.
AI Security Seed
kb-eye.jp →
Cowmel (カウメル)
Unicorn candidate. Received follow-on investment based on outstanding management team construction and strong growth trajectory.
Platform Unicorn Candidate Follow-on
Yondemy (ヨンデミー)
AI-powered children's reading education platform. Building personalized reading experiences that nurture a love of books in young learners through adaptive AI technology.
AI EdTech Seed
yondemy.com →
issues (イシューズ)
Civic engagement platform connecting citizens with politicians. Enabling direct dialogue between voters and representatives to transform democratic participation.
Platform CivicTech Seed
the-issues.jp →
SILK THE RICH
Premium silk-based hair care brand. D2C brand leveraging high-quality natural materials and data-driven marketing in the beauty & personal care category.
D2C Beauty Seed
silktherich.com →
Interdimension
Cross-border yoga and wellness platform. Connecting practitioners across borders through technology-enabled experiences.
Platform Wellness Seed
interdimension.jp →
KIDS SNACK LAB
Healthy children's snack D2C brand. Developing nutritious, additive-free snacks for health-conscious parents with a subscription model.
D2C FoodTech Seed
kidssnacklab.com →
Back Dooor (バックドア)
Sports live streaming and fan engagement platform. Enabling real-time viewing of amateur and semi-professional sports events.
Platform Sports Seed
Suisei (スイセイ)
AI-powered BPO solution. Combining artificial intelligence with business process outsourcing to deliver scalable, efficient operations for enterprises.
AI BPO Seed
jirei-pro.com →
Prorium (プロリウム)
Therapist education and training platform. Digitizing professional development for rehabilitation and therapy practitioners.
EdTech Healthcare Seed
prorium.co.jp →
+ 19 Confidential Companies
Additional investments across SaaS, DX, Fintech, Matching, Entertainment, and other sectors. Company names remain undisclosed at the founders' request. All selected for unicorn potential and founder quality.
Various Sectors Seed Confidential
"My portfolio company, AI security firm KB-eye, appeared on REAL VALUE and received the highest corporate valuation in the program's history — ¥100 billion. I invested over 3 years ago in 2022. What truly drives a company's growth is the founding team."

Join the Portfolio

I invest in 6 new seed-stage companies each year, deploying approximately ¥100M annually. If you're building an IPO-track startup in IT/Web services, I'd love to hear your story.

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