Ichihara Yui is a 15 years old high school girl. On the first day, she meets Itsuka Daisuke and mistakes him for a teacher. To her surprise, they meet again in the classroom but he is in fact a high schooler too. Indeed, Itsuka is 25 years old and he wants to enjoy the high school life he has never been able to get ten years ago.
This is the sweetest story I've read in a long time. Itsuka, a 25 years old man, goes back to highschool as an student, there he is classmates with Ichihara, a 15 years old girl who is a client of his family business. Ichihara and Itsuka make a deal: to enjoy their youth together, but romance between classmates it's not allowed. You say!! Such a beautiful and tender story. I love this soo much!!!