Not bad BUT
1) it has never been pronounced that the movie is actually telling a true story
2) in real life he never was a "pussy" but started training at the age of 5 and earned master degress in several fighting disciplines - so from childhood on he always was one of the best
3) the movie did not tell anything about his being famous around the world. In the movie it seems like he was someone known to the local Japanese press only. In fact he did a tour around the world challenging the best fighters of the time including american wrestlers etc. --> he won them all. Most fights within seconds!
4) I guess this guy was the best fighter the world has ever seen - Bruce Lee and the likes are nothing more than schoolboys compared to this one. Unfortuantely the movie did not help clearing this up - so his story will rest in some drawers of his karate schools.