Tiger Mask

The Tiger's Cave looks like a training centre where young lads can turn into professional wrestler. It is, in fact, a mysterious organisation that trains people to be villainous wrestler on the condition that they give half of their earnings to the organisation. A young orphan falls into the traps of the Tiger's Cave and is forced to endure terrible trainings, becoming a mercenary wrestler who fights all over the world. But after years of slavery, the protagonist rebels against the organisation risking his own life.