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Astart

Venture Capital

aSTART is a Tokyo-based venture capital firm founded in 2015 by entrepreneur Kazumasa Watanabe that backs Japanese technology startups, including dedicated space-technology funds, from seed through later stages with hands-on, entrepreneurial support.

Tokyo, Japan · 2+ investments · 2 portfolio companies

Seed
Early Stage
Growth
Late Stage
Artificial Intelligence
Deep Tech
Robotics
Headquarters
Tokyo, Japan
Founded
2015
Portfolio Companies
2
Total Investments
2
Last Investment
Jan 2026
Geographic Focus
Japan

Investment Thesis

Identifies and funds technology ventures with potential to build innovative services and products, applying an entrepreneurial VC approach across seed through later stages, including dedicated space-tech funds.

Astart is a Venture Capital firm based in Tokyo, Japan. It has made 2 investments, including Oceanic Constellations and Pale Blue. Focus areas include Artificial Intelligence and Deep Tech.

Portfolio2

Co-investors15

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15 co-investors across 15 shared portfolio companies — who they back alongside, and how often they lead.

Venture Capital ×14 · Other ×1 · 8 shared rounds

Investment History

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