Everyone Practices Martial Arts, but My Body Is Perfect

This is a world full of strange energy, called "spiritual power" or "magic power" or "curse power", "mana power", "demon power" and so on. In this world, everyone has spiritual power and everyone can practice magic. But in a family, a "monkey" without any spiritual power was born, but in contrast to it was a perfect body given by God, free from any constraints, creating his own legend...