One rainy day, salaryman Amakusa Ryo is saved by a high school girl he doesn't know at the station. He later finds out that the girl is Arima Ichika. Ryo is somewhat of a womanizer and to repay her for saving him, he suggests giving her a kiss or going out on a date with her, in which Ichika tells him he's creepy. This, however, opens a new door for Ryo and he falls madly in love with her. Ever since then, Ryo tries to overly express his feelings to Ichika. Ichika just keeps insulting him and says he's being creepy, but he just seems to take it as her way of showing affection towards him...

At Yurigahara High School, the occult legend of "Yuriko-sama" has been handed down for generations. The existence of "Yuriko-sama" who reigns at the top of the school and brings misery to those who stand against her. The only condition to become a "Yuriko-sama" is to have the name Yuriko. In the new semester, a new "Yuriko-sama" fight begins. In order to save Yasaka Yuriko, her best friend, Shimakura Mizuki stands up and challenges the truth behind the legend.