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
$2.6B+
Invested
$1.4B+
Deals
1,200+
Active Portfolio
400+
IPO
41
M&A
84

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
75
Supporters
40
Fund Management
15
Operations
37
  • Keita Arai

    Keita Arai

    Investment Group

    Director

  • Dong-eun Kim

    Dong-eun Kim

    Investment Group

    Director

  • Megumi Asatsuma

    Megumi Asatsuma

    Corporate Management Group

    Director

  • Ryo Kiyofuji

    Ryo Kiyofuji

    Investment Group

    Director

  • Kazunori Yamaguchi

    Kazunori Yamaguchi

    Investment Group

    Partner

  • Daisuke Nishida

    Daisuke Nishida

    Investment Group

    General Partner

  • Seiichiro Mukai

    Seiichiro Mukai

    Investment Group

    Director

  • View full team