Yaruki Manman

Reluctant heir to his family's adult entertainment empire, Kazuma Shino finds himself saddled with a business struggling to stay relevant. His father's solution: send him on a journey across Japan to gain real-world experience. The catch — Kazuma must complete his 'training' without losing control, because ejaculating in front of any of the women he encounters means forfeiting his inheritance. Oh, and his penis is a talking anthropomorphic character who comes along for the ride. That last part is not a metaphor. This 3-episode OVA from 1989 leans hard into comedy, treating the whole premise as an extended gag rather than straight-up erotica. The tension is less erotic and more slapstick — watching Kazuma white-knuckle his way through encounters with geishas while his situation grows increasingly absurd. Knack Productions clearly had fun with the parody angle, poking at adult entertainment tropes rather than simply delivering them. If you've watched something like Cream Lemon or La Blue Girl and wanted the genre to stop taking itself seriously for five minutes, this scratches that itch. It sits closer to raunchy comedy than anything genuinely explicit in its intent — the joke is always front and center. Think less 'late-night adult OVA' and more 'someone made a Carry On film in anime form during the bubble economy era.' It's weird, it's dated, and it knows exactly what it is.