Miharu, a female college student, is quiet, kind, and unlucky. A personality like her is a gloomy character in the world. She is commonly called "Yin-Kya". However, she was unconsciously endowed with an abnormal sex appeal and a plumply developed body that seduces men unconsciously. The men are maddened by her charm and sex appeal, and some even get their hands on her reason. Tashiro, a seminar professor, reaches the limit of his patience and commits a crime. But she seemed to accept what she didn't say in her words...
