This one wears you down with pure absurdity until you stop resisting and just laugh. Kenichi Kokuhou got lost in the mountains as a kid, was raised feral by a foster father nobody knew existed, and at fifteen walks back into town at full mountain-man power level, and the joke is never that he can't cope. It's that civilization can't cope with him. His parents are overjoyed their son is alive and immediately horrified by what showed up at the door, and that gag engine keeps running for 24 episodes without pretending to be about anything deeper. No trauma arc, no hidden tragedy, no lesson about belonging. It's 1988, late-Showa gag anime energy, loud and unbothered, built entirely on one boy's total ignorance of how normal people behave. Watch it for the moment his family realizes the kid they mourned came back louder than they could ever have prepared for.

Kenichi Kokuhou disappeared in the mountains as a small boy and was never found. Unknown to anyone, he was raised in the wild by a foster father. At fifteen, he learns the truth about where he came from and sets out for the town where his parents live. Town life fills him with surprise and wonder at every turn. His family is overjoyed that he is alive but shocked at how wild and unlike other children he has become. His untamed manner and physical toughness stir up trouble around town, and his way of handling things is too unusual for most people to follow. The result is an action comedy about whether a boy raised in the wilderness can adjust to life in town.