Company
JustDidIt Japan LLC
The Tokyo-based company behind Cards of Heroes.
Corporate Overview
- Company
- JustDidIt Japan LLC
- Founded
- November 2025
- Headquarters — Tokyo
- 2F, Daiwa Harumi Building
3-10-1 Harumi, Chuo-ku
Tokyo 104-0053, Japan - Representative
- Kosei Okubo
- Product
- Cards of Heroes
Product
Cards of Heroes™
A historical card battle game that connects play with discovery. Explore historical heroes, stories, lessons, quizzes, and card games.
Play Cards of Heroes →Principles
The JustDidIt Principles
We have three principles.
- Be useful to users.
- Be useful to users.
- Never forget Rules No. 1 and 2.
Contact
For company inquiries, partnerships, press, or Cards of Heroes support, use our dedicated inquiry form.
Contact JustDidIt Japan LLC →