A Japanese martial artist Tomioka sends out the challenge letter to the world class martial artists all over the world to challenge them to become the strongest martial artist in the world.
| Release Date | January 1, 2015 | |
|---|---|---|
| Status | Released | |
| Original Title | The Challenge Letter | |
| Runtime | — | |
| Budget | — | |
| Revenue | — | |
| Language | — | |
| Original Language | English | |
| Production Countries | Australia | |
| Production Companies | ||