Shota's cousin Miori comes to stay at his house during winter break. Miori is tall and stylish, with a graceful, pure aura and a subtly mature charm. While Shota pretends to study with her, he becomes obsessed with her big ass and the way her T-back digs into her curves. Unable to focus on studying, he hugs and gropes her large buttocks, burying his face in them and sniffing passionately. Their tension builds until it finally escalates into sex. This story captures their intimate moments together.