An angel investor based in Tokyo, Japan, Etsuji Otsuka has one known investment, Coursebase.
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Investment focus
- Stage
- Seed
Contacts
Etsuji Otsuka portfolio company (1)
- Coursebase
Investor Profile
The known portfolio sits in sectors Education and SaaS, and focus areas Enterprise SaaS, HR Tech, Productivity and Task Management.
The stage tag on this profile is Seed.
The portfolio and focus above give founders context on whether Etsuji Otsuka matches their raise.
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Frequently asked questions
Who is Etsuji Otsuka?
Etsuji Otsuka is an angel investor based in Tokyo, Japan with one known investment on file, Coursebase. The sections above list the sectors and stages attached to that record.
What does Etsuji Otsuka invest in?
Listed sectors include Education and SaaS; listed focus areas include Enterprise SaaS, HR Tech, Productivity and Task Management. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Etsuji Otsuka invest at?
The database lists Etsuji Otsuka for Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
How do I contact Etsuji Otsuka?
A LinkedIn page is on file for Etsuji Otsuka. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 6 September 2026 · How this data is built · Report a correction or request removal