Little brother encourages his shy sister to become friends with the outgoing new girl next door, not realizing that the new girl (and his sister) are lesbians, and he's actually pushing them to date.

It has been five years since Hiro's older brother passed away, and during those years, he has been living with his brother's widow, Yayoi. Fast forward to the present, Hiro's feelings for Yayoi is brighter t...