Don't You Wanna Learn Something New? The Animation

When his grandfather falls ill, some dude ends up inheriting the old man's model kit shop, which is already a weirdly specific setup for a hentai, but it works. The shop's in rough shape, so Risa — a regular customer who's really into model kits and happens to have a killer figure — volunteers to help out part-time. She's strict, reliable, and keeps things professional as they get the business back on its feet. Things are going well until one evening after closing, Risa starts casually changing clothes right in front of him like it's nothing. He panics, knocks over some mysterious solvent his grandfather cooked up, and it splashes on her. Whatever's in that stuff flips a switch in Risa's personality, and suddenly the dynamic between them shifts into very different territory. It's a 2-episode OVA from Studio Seven, adapted from a manga, and the whole thing leans into that mix of surprise and seduction without dragging things out. The mysterious solvent is a fun little plot device that keeps the setup from feeling completely generic. If you liked the character dynamics in Kanojo x Kanojo x Kanojo or the escalating scenarios in Oni Chichi, this hits a similar groove — engaging enough on the story side to not feel hollow, with solid animation carrying the intimate scenes. The professional-to-personal evolution between the two leads gives it just enough emotional texture to stay interesting across both episodes.