Hideki Otsuka
About Hideki Otsuka
Hideki Otsuka is the Representative Director and CEO of Speee, a company based in Tokyo. Crunchbase and Bloomberg both list him as its chief executive.
The sources I found do not give his earlier career, education or the year he started Speee, so those details are left out. Founders who want more can check Speee's own site at speee.jp.
The only angel investment I could confirm is dodoAI. PitchBook lists him as an active individual (angel) investor with one recorded investment, dated 18 June 2026. No earlier angel deals, exits or total investment count are public in the sources I found.
dodoAI closed a ¥280 million seed round, announced on 18 June 2026. Genesia Ventures led it. The other participants were Quantum Leap Ventures, Mitsubishi UFJ Capital, Mitsui Sumitomo Insurance Venture Capital and Otsuka as an individual investor.
dodoAI, formerly 58 Inc., renamed itself on 1 June 2026. It sells what it calls a Sovereign Agentic OS, a governance layer for AI agents doing corporate work. The product monitors, verifies and audits AI output and requires human approval before final actions. It works with several model providers and can run in public cloud, on-premises or air-gapped. The company is targeting regulated industries such as financial services, manufacturing, telecommunications and energy.
The ¥280 million is the total round. Otsuka's own check size was not disclosed.
With one confirmed deal, there is not enough public information to describe a stated thesis. That deal was a seed-stage investment in enterprise AI infrastructure for regulated industries, with a Tokyo headquarters and engineering teams in Tokyo and Vietnam. PitchBook classifies dodoAI as business and productivity software, generating revenue.
I found no public statements from Otsuka about what he looks for, and no public check size.
- dodoAI: enterprise AI governance platform for AI agents (Sovereign Agentic OS); participated in the ¥280M seed round announced June 2026, led by Genesia Ventures.
- pitchbook.com/profiles/investor/1421351-92
- coverager.com/dodoai-raises-%C2%A5280m-seed-for-enterprise-ai-governan
- thebridge.jp/en/2026/06/ai-agents-controlled-and-audited-by-governance
- fintechobserver.com/ai-governance-startup-dodoai-rebrands-and-secures-
- crunchbase.com/organization/speee
- bloomberg.com/profile/person/21703820
Investing activity
Hideki Otsuka appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $2M. The most recent is dodoAI (Seed, ¥280M, Jun 2026).
Hideki Otsuka most often invests alongside Genesia Ventures, Mitsui Sumitomo Insurance Venture Capital, Quantum Leap Ventures and Mitsubishi UFJ Capital, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Hideki Otsuka
Who is Hideki Otsuka?
He is the Representative Director and CEO of Speee, a Tokyo company. He has also invested personally in AI startups, most recently dodoAI.
What AI startups has Hideki Otsuka invested in?
The one confirmed investment is dodoAI, a Tokyo enterprise AI governance company. He joined its ¥280M seed round in June 2026.
What is Hideki Otsuka's angel check size?
It is not public. The ¥280M figure is the whole dodoAI round, not his share.
What stage does Hideki Otsuka invest in?
His one recorded deal is a seed round. There is not enough public data to say whether he also invests at other stages.
Does Hideki Otsuka invest outside Japan?
No public information shows that. His one known investment is in a Tokyo company with engineering teams in Tokyo and Vietnam.
How should founders approach Hideki Otsuka?
He has no public pitch process or contact route that I could find. A warm introduction through his Speee network or the dodoAI syndicate is the more realistic path.
Is Hideki Otsuka an angel investor?
Yes. Hideki Otsuka invests personally as an angel.
What AI companies has Hideki Otsuka invested in?
Hideki Otsuka's AI investments include dodoAI. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Hideki Otsuka invest at?
In the rounds tracked on Lounge, Hideki Otsuka has invested at Seed, with a median round of $2M.
Who does Hideki Otsuka co-invest with?
Hideki Otsuka's most frequent co-investors on Lounge are Genesia Ventures (1 deal), Mitsui Sumitomo Insurance Venture Capital (1 deal), Quantum Leap Ventures (1 deal) and Mitsubishi UFJ Capital (1 deal).