Oshan is a shy student living in Kamakura. He's going in Shichirigahama High School where he's trying to be a good serious student without acting impulsive or being interesting in the teen cool life like other students.

But things changed when he lay eyes on Kohaku, an older student from his school.

Kohaku was the polar opposite of Oshan, a Gyaru with a scary attitude and avoided by everyone for her cold character. But after Oshan paying attention to his Senpai, he understands the rumours are just rumours.