+81
Venture studioSeed–Growth
Also known as ＋81株式会社
Investment thesis
+81 operates as a venture studio built around entrepreneurship, launching multiple new businesses in parallel to address social and industrial problems. It provides business owners with a professional team supporting ideation, validation, organizational design and launch, plus capital, partner connections, talent and back-office functions so founders can focus on building. Rather than individuals bearing all startup risk, it offers a middle-risk/middle-return model with incentives tied to business outcomes and full autonomy over strategy and organization. Its concept, framed as Business to Ecosystem (BtoE), seeks to redefine industry structures and create sustainable, wide-reaching social impact.
Source: firm website, verified Aug 3, 2026.
Frequently asked questions
- What stage does +81 invest at?
- +81 invests at the Seed, Series A, Series B, Series C, Growth stages.
- What sectors does +81 focus on?
- +81 focuses on Sector Agnostic.
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