Ichihara Yui is a 15 years old high school girl. On the first day, she meets Itsuka Daisuke and mist...
Ichihara Yui, 15 girl, is meant to be coaching Itsuka Daisuke 25 boy on how to behave with his new school mates. Indeed Itsuka he starting high school again after dropping out to help with his family business 10 years ago.