Takuto Hirabayashi now works at a company, Kyohei Hano works at a trading company and Hajime works for an apparel brand. The three of them are friends since high school and live together in a share house. A day when they come back home they find a baby inside the house with the writing "It's your son". No-one of them wants the baby and they keep on blaming each other, but the child falls sick and they are forced to take care of him.

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.