founders.io

⌕

Companies Founders Mafias

Investors Connection finder Y Combinator 6,016 Unicorns 🦄 Startup mafias Data & downloads About

Contribute

⌕

Companies Founders Investors Startup mafias Connection finder Y Combinator Unicorns 🦄 Data & downloads About Contribute

Home /Founders /Haruto Katayama

H

Founder

Haruto Katayama

Founder of HappinessBase Publishing

Media & Entertainment Since 2021

Suggest an edit

Companies founded

1

H

HappinessBase Publishing Private

Media & Entertainment · Japan

At a glance

Companies1

Corrections

Spot an error, or want to be removed? Report a correction.

founders.io

The Founder Graph — the living map of who founded what, and where they came from before. A free, open reference. How this is built →

Explore

Startup mafias Repeat founders Companies by sector Investors Connection finder Search

Contribute

Add to the graph Report a correction Data & sources Privacy & removal Unicorns 🦄 YC companies