Uhou Renka...

Based on the erotic game by Caramel Box. Ryouhei was suddenly be called back to his hometown in the countryside. There, he meets Karen's mascot-girl from the inn's house. As she stands entranced by the sight of her bewitching proportions, Nagisa, the younger brother of Ryouhei's ex-boyfriend and the man who introduced her to Karen, looks on uneasily. (Source: ...