Skirt no Naka wa Kedamono Deshita.

Shizuka Kominami is a reserved college student who freezes around men. Dragged to a street mixer by a friend, she slips away from the noise and is approached by Ryou Kirishima, a beautiful older student who feels safe, kind, and easy to talk to. They sneak out, drink, and end up in Ryou’s room. Then Ryou kisses her, pushes her down, and will not stop. Shizuka first thinks she has been cornered by a woman. The hardness against her body tells another story: Ryou is a man in a skirt.

The morning after does not end the problem. Ryou shows up at her campus still in women’s clothes, treats her like a prize in front of her friends, and keeps pulling her into bathrooms, hotels, and Ferris-wheel cars. He says it is not a game. He says he likes her. Shizuka does not know what she feels — fear, heat, jealousy when other people look at him, or something closer to love.

Around them, classmate Sousuke Kuratani confesses, and campus beauty Sumire Sakurai is rumored to match Ryou perfectly. Misunderstandings pile up. Ryou’s selfish hunger keeps hurting Shizuka even while he tries to be honest. Across twelve short, explicit episodes, the pair stumble from first shock to a confession neither of them can take back: the beast under the skirt is in love, and so, finally, is she.