Who trains Inosuke?

Takaharu ( 高 たか 晴 はる , Takaharu?) is the grandson of the villager who taught Inosuke how to speak.

Did Inosuke teach himself?

Growing up, Inosuke survived fighting vicious demons in the mountains. Although The Beast Breathing is a branched-out version of wind breathing, Inosuke self-taught this technique without anyone’s supervision.