Marunouchi Innovation Partners

Japan
Series A
Share

About Marunouchi Innovation Partners

Marunouchi Innovation Partners is a venture capital firm based in Japan, focusing on Series A stage investments. The fund actively supports founders building innovative solutions in AI/ML, Climate & Sustainability, providing strategic guidance and capital to help startups scale.

Investment Focus

Location / RegionJapan
Funding StageSeries A
Industry Focus
Ai Ml
Climate Sustainability

Investor Signals Profile

active

Sweet Spot

Growth-stage climate tech founder scaling globally

climate tech
carbon neutral
growth capital
global markets
deep tech

Bullish Signals

Mitsubishi Corp as main sponsorexternal
London branch opening 2026external
Invested Fervo Energy, Fabric8Labs, Ubicquiaexternal
Active follow-on investments ongoingexternal
3-shareholder JV — diversified backingwebsite
Wide climate tech scope — no narrow nichewebsite
Marunouchi Climate Tech Growth Fund activewebsite
ESG policy formally in placewebsite
Recent 2025 follow-on in Fervo Energywebsite
Recent 2025 investment in Fabric8Labswebsite
2026 London expansion confirms global scale-upwebsite
Ubicquia geospatial infra investment Feb 2026website

Contrarian Signals

Corporate JV — strategic agenda may applyexternal
Japan-HQ, global reach still emergingexternal

Founder Do's

Have cutting-edge climate tech
Ready to scale commercially
Seeking growth-stage capital
Open to global market access
Align with carbon-neutral 2050

Founder Don'ts

Early pre-revenue stage
Non-climate tech sectors
No global scaling ambition

Unlock Investor Signals

$29/month for full signal access. Cancel anytime.

Fund Overview

Fund Size$744M
Saves0

Key People

Chiro Miyoshi

Related Funds

Sony Innovation Fund 4

¥20.1K
Japan
Seed
Robotics Automation, Ai Ml, Deep Tech
Fund Manager:Sony Ventures Corporation
Seed
Robotics Automation
Ai Ml
Deep Tech

KSK Angel Fund

$98M
Japan
Seed
Web3 Infrastructure, Ai Ml
Fund Manager:Keisuke Honda
Seed
Web3 Infrastructure
Ai Ml

Global Brain Flagship Fund IX

$220M
Japan
Pre Seed
Ai Ml
Fund Manager:Yasuhiko Yurimoto
Pre Seed
Ai Ml