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
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
75
Supporters
40
Fund Management
15
Operations
37
  • Takuya Hosomura

    Takuya Hosomura

    Investment Group

    Partner

  • Hiroshi Shimazu

    Hiroshi Shimazu

    Corporate Management Group

    Partner

  • Seiichiro Mukai

    Seiichiro Mukai

    Investment Group

    Director

  • Masao Yamada

    Masao Yamada

    Venture Partner

  • Noriko Usui

    Noriko Usui

    Fund Management Group

    Partner

  • Takeru Shigemura

    Takeru Shigemura

    Investment Group

    Director

  • Akiko Noguchi

    Akiko Noguchi

    Corporate Management Group

    Director

  • View full team