Japanese serial entrepreneur and investor Taizo Son recently invested an undisclosed amount in Blume Ventures, an early-stage venture capital firm focused on Indian technology startups, according to a source familiar with the deal.

The investment was made through Mistletoe, Inc., Son’s Japan-based company working to foster Asia’s startup ecosystem. Blume joins an existing cadre of venture capital partners that Mistletoe is leveraging to accomplish its stated goal.

The partnership with Blume is perhaps more significant than previous investments, as it is Mistletoe’s first venture capital relationship outside of Japan and Silicon Valley and a strong signal of the growing appeal of the Indian venture capital market and startup ecosystem.

In addition to partnerships with venture capital firms, Mistletoe aims to affect the industry from end to end by operating a startup studio, investing directly in startups, sponsoring startup-focused events and partnering with various accelerators.

Mistletoe’s startup portfolio includes ExaScaler, Flower Robotics, Afero, Sumally Pocket, Eneco, among others.

Taizo Son is himself a successful entrepreneur who is known for helping establish Yahoo Japan and founding the video game company, GungHo Online Entertainment, which he later took public, making him a billionaire. He is also the younger brother of SoftBank founder and CEO Masayoshi Son, who Forbes listed as Japan’s second richest man in 2016.