Miharu, a female college student, seems to be quiet, kind, and happy. A gloomy character with a personality like her. It is commonly called "Yinka". However, she was endowed with an unusual sex appeal and a plumply developed body that unknowingly and unknowingly seduces a man. Some of the men are crazy about her charm and sensuality, and some of them have reason. Tashiro, a professor of the seminar, also reaches the limit of patience and commits. But she seemed to accept what she couldn't say in words ...