Childhood friends Rui and Hazuki start sharing a room when they go to university. However, they are not the best of friends, and because of "an incident", Rui has felt guilty about Hazuki for many years. Since then, Rui has been unable to refuse Hazuki's "requests", but it seems that Hazuki has secret feelings for Rui...? 幼馴染の類と葉月は、大学進学を機にルームシェアをスタート。ところが、仲睦まじいとは言い切れず、”ある出来事”のせいで類は葉月に長年、後ろめたさを抱いていた。以来、葉月の”お願い”を断れずにいる類だったけれど、葉月は葉月で類に秘めた想いがあるようで…？