Moritoki is a 3th grade student, good at sports attending to the Hoshino Gakuen highschool. But also there are three chilhood friends of his that are attending the same highschool. Back in the days when they were childeren they make a promise with Moritoki, unfortunately Moritoki forgot the promise. They tell him the promise…
The day when he became a adult he must propose one of the three childhood friends. So from now 1 month later… which one is it going to be? who is your N.1