ABOUT
The team behind the products.
We're a small crew in Marunouchi, Tokyo. We invest in companies, build AI tools for them, and ship our own products. No committees, no consensus — just building.
MISSION
Build what others only pitch.
Most AI companies make slide decks. We make products. Every idea starts as a working prototype, not a pitch. If it works, we ship it. If it doesn't, we kill it and move on.
APPROACH
Code > Slides
Claude Code, Cursor, and AI-native dev tools. Every team member ships code. We deploy daily, measure everything, and iterate based on real usage — not opinions.
TEAM
RM
Reo Matsuda
CEO
COMPANY INFO
CompanyMarunouchi Investment Group, K.K.
CEOReo Matsuda
FoundedApril 2025
Capital¥1,000,000
BusinessAI Product Development / Startup Investment / Talent Management
LocationYusen Building 1F, 2-3-2 Marunouchi, Chiyoda-ku, Tokyo
Employees5 (including external partners)
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