# Craif funding: rounds and investors

> Craif has raised $57M across 3 rounds since 2025. Investors include X&KSK, Unreasonable and Granite-Integral. Every round with its source.

Source: https://millionrounds.com/company/craif (Millionrounds; every figure on the page links to its filing or article)

Japan · [Series D startup](https://millionrounds.com/companies)

# Who invested in *Craif*

3 rounds we have observed, with the 11 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

AI Biotech Healthcare Medical Devices

Raised 3 months ago

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Funding summary Updated 5 Nov 2026

**$57M** raised across 3 rounds since 2025, from 4 sources

**$2.1M** Debt **$22M** Series C **$33M** Series D

- **Latest round:** Series D, $33M Aug 2026
- **Led by:** Granite-Integral and Tauns Co
- **Step-up i:** 1.5×
- **Investors:** 11 (3 led)

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2026

**$2.1M** Debt

**$22M** Series C

**$33M** Series D

- **First round:** Debt, $2.1M
- **Biggest round:** $33M
- **Between rounds:** 16 months

## The rounds

- **Aug 2026** Series D **$33M** *2 new* *2 returning* [Granite-Integral](https://millionrounds.com/fund/granite-integral) Lead [Tauns Co](https://millionrounds.com/fund/tauns-co) Lead [Unreasonable](https://millionrounds.com/fund/unreasonable) [X&KSK](https://millionrounds.com/fund/x-and-ksk) Reported by Ventureburn
- **Apr 2025** Series C **$22M** *5 new* [X&KSK](https://millionrounds.com/fund/x-and-ksk) Lead [Aozora Bank Ltd.](https://millionrounds.com/fund/aozora-bank-ltd) [Unreasonable](https://millionrounds.com/fund/unreasonable) [Daiwa House Industry](https://millionrounds.com/fund/daiwa-house-industry) [TAUNS Laboratories](https://millionrounds.com/fund/tauns-laboratories) Reported by Firms' own news pages and 1 other
- **Apr 2025** Debt **$2.1M** *4 new* [Global Brain Corporation](https://millionrounds.com/fund/global-brain-corporation) [ANRI](https://millionrounds.com/fund/anri) [Daiwa Corporate Investment](https://millionrounds.com/fund/daiwa-corporate-investment) [Aozora Corporate Investment](https://millionrounds.com/fund/aozora-corporate-investment) Source recorded

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Debt** 2025 **Series C** 2025 **Series D** 2026 [X&KSK](https://millionrounds.com/fund/x-and-ksk) L [Unreasonable](https://millionrounds.com/fund/unreasonable) [Granite-Integral](https://millionrounds.com/fund/granite-integral) L [Tauns Co](https://millionrounds.com/fund/tauns-co) L [Global Brain Corporation](https://millionrounds.com/fund/global-brain-corporation) [ANRI](https://millionrounds.com/fund/anri) [Daiwa Corporate Investment](https://millionrounds.com/fund/daiwa-corporate-investment) [Aozora Corporate Investment](https://millionrounds.com/fund/aozora-corporate-investment) [Aozora Bank Ltd.](https://millionrounds.com/fund/aozora-bank-ltd) [Daiwa House Industry](https://millionrounds.com/fund/daiwa-house-industry)

## Everyone who backed them

[X&KSK](https://millionrounds.com/fund/x-and-ksk) Growth equity **2** rounds, led 1

[Unreasonable](https://millionrounds.com/fund/unreasonable) Private equity **2** rounds

[Granite-Integral](https://millionrounds.com/fund/granite-integral) Growth equity **1** round, led 1

[Tauns Co](https://millionrounds.com/fund/tauns-co) Growth equity **1** round, led 1

[Global Brain Corporation](https://millionrounds.com/fund/global-brain-corporation) VC firm **1** round

[ANRI](https://millionrounds.com/fund/anri) VC firm **1** round

[Daiwa Corporate Investment](https://millionrounds.com/fund/daiwa-corporate-investment) Corporate VC **1** round

[Aozora Corporate Investment](https://millionrounds.com/fund/aozora-corporate-investment) Private equity **1** round

[Aozora Bank Ltd.](https://millionrounds.com/fund/aozora-bank-ltd) Government **1** round

[Daiwa House Industry](https://millionrounds.com/fund/daiwa-house-industry) Growth equity **1** round

[TAUNS Laboratories](https://millionrounds.com/fund/tauns-laboratories) Growth equity **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=craif).

## Also claim to have backed them

These 2 firms list Craif as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

[1955 Capital](https://millionrounds.com/fund/1955-capital) VC firm Per its own site

[Hakuhodo DY Ventures](https://millionrounds.com/fund/hakuhodo-dy-ventures) VC firm Per its own site

## Quick answers about Craif

### Who invested in Craif?

Craif's investors include X&KSK, Unreasonable, Granite-Integral, Tauns Co and Global Brain Corporation, and 6 more on record. Granite-Integral led its latest round.

### How much has Craif raised?

Craif has raised $57M across 3 rounds since 2025.

### When did Craif last raise?

Craif's most recent round was a Series D of $33M in Aug 2026, led by Granite-Integral.

### What was Craif's biggest round?

Its most recent round, $33M in Aug 2026, is also its largest on record.

### Who backed Craif first?

Craif's first round on record, in Apr 2025, was backed by Global Brain Corporation, ANRI and Daiwa Corporate Investment and 1 others.

### What stage is Craif at?

Craif's latest named round is a Series D, in Aug 2026.

### Where is Craif based?

Craif is based in Japan.

### Who led Craif's rounds?

X&KSK led the Series C in 2025; Granite-Integral led the Series D in 2026.

## Companies like Craif

In the same sector, and raised in the last eighteen months.

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