Companies / openheart.co.jp

openheart.co.jp

Minato, Tokyo, Japan

openheart.co.jp, based in Minato, Tokyo, Japan, has 3 investors on file, among them Mitsui Sumitomo Insurance Capital, Mizuho Capital and RICOH Innovation Fund. Its latest round on record is Seed, 15 May 2026. Its site turns away automated reads, so VCinfo could not check it; it is listed because an investor's own portfolio page links to it.

openheart.co.jp

Funding

1 round on record

Latest roundSeed15 May 2026

Since that round6 monthsno later round on record

Investors in its rounds53 with a VCinfo profile

May 2026SeedWith Mizuho Capital, RICOH Innovation Fund, Mitsui Sumitomo Insurance Capital and 2 others

Round sizes and total raised are on Fundup AI, our sister product for funding data.

Investors

3 investors on file

Investor	Evidence	Type
Mitsui Sumitomo Insurance Capital	Page + round	Corporate VC
Mizuho Capital	Portfolio page	Venture capital
RICOH Innovation Fund	Page + round	Corporate VC

A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data

At a glance

Latest round: Seed, 15 May 2026
Investors on file: 3
Employees: 1-10
Headquarters: Minato, Tokyo, Japan
Site: Could not be checked
Last checked: 13 Nov 2026

Company data by Fundup AI.

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GET /v1/companies/openheart.co.jp/investors
GET /v1/companies/openheart.co.jp/news

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VCinfo API

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