We help startups get ready
to take off on a global scale

Global Brain is an independent venture capital firm that aims to bring new
industries to the society through extensive hands-on support for
startups and open innovation with large corporations.

AUM
$2.7B+
Invested
$1.4B+
Deals
1,200+
Active Portfolio
400+
IPO
42
M&A
87

Mirrativ is newly listed on
TSE Growth Market.

As one of the largest mobile game streaming platforms in Japan, Mirrativ has achieved drastic growth through creating new communities and game experiences. Global Brain truly wishes Mirrativ even greater prosperity through its continuous endeavors such as new businesses based on its “All for Streamers” strategy.

Mirrativ, Inc.

TSE Growth Market

December 18, 2025

News

Press Release

GB Universe

Funds & Projects

We manage flagship funds funded by
institutional
investors and companies,
as well as CVC fund
and co-investment
projects with our partners.

Team

We are a team of globally prominent and
diverse
backgrounds, providing in-depth
support to
our portfolio companies.

Investors
72
Supporters
38
Fund Management
14
Operations
36
  • Keito Saito

    Keito Saito

    Corporate Management Group

    Principal

  • Thomas Duong

    Thomas Duong

    Corporate Management Group

    Director

  • Sayuri Yamagishi

    Sayuri Yamagishi

    Corporate Management Group

    Director

  • Yoshimune Arai

    Yoshimune Arai

    Corporate Management Group

    Principal

  • Kenta Kitsuka

    Kenta Kitsuka

    Investment Group

    General Partner

  • Masaya Kawakami

    Masaya Kawakami

    Investment Group

    Partner

  • Hideki Komatsu

    Hideki Komatsu

    Investment Group

    Executive Fellow

  • View full team