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 spent his childhood lost in the mountains, raised by a mysterious foster father in complete isolation from civilization. At fifteen, he finally learns the truth: he has a real family waiting for him in the city. When he arrives to reconnect with his parents, Kenichi carries nothing but the wild instincts and raw physicality of his upbringing into a world he's never experienced. The clash is immediate and constant. What makes perfect sense to Kenichi,solving problems through brute force, living by animal instinct, rejecting social conventions,horrifies and confuses everyone around him. His parents struggle to recognize their lost son beneath the feral teenager who doesn't understand doors, clothing, or why people use words instead of just doing things. His school classmates don't know what to make of him. Yet Kenichi isn't trying to be difficult. He's genuinely trying to fit in, applying the only logic he knows to situations that demand something entirely different. The result is a comedy of misunderstanding played straight, where a good-hearted kid from the wilderness must somehow navigate the bewildering rules of civilized life.