MIG.

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)