

Since their parents died at an early age, Susumu and Yoriko have lived together. Susumu is now 33-years-old and Yoriko is 40-years-old. Both of them have yet to marry. They are like most siblings and they rely on each other. One day, Susumu and Yoriko receive a letter that is sent to the wrong address.

向井理

片桐はいり

山本美月

及川光博

麻生久美子

大森南朋