Ojisan wa Kawaii Mono ga Osuki.

Mitsutaka Oji is a handsome, capable forty-year-old office worker whose colleagues see him as the model of a cool, mature adult. He hides one passion because he believes it clashes completely with that image: he adores tiny, cute things and secretly fills his private life with characters and merchandise that make him happy.

Keeping the secret becomes much harder when his nephew moves into his apartment, turning the one place where Oji could relax into a space where his collection might be discovered at any moment. Between work, home, and encounters with people who share similar interests, Oji begins wondering whether he truly fears others finding out about his hobby, or fears them rejecting a sincere part of who he is.