(The side story to A New Senpai.) When a daughter of the Aishi family turn 19, they are expected to have a child with their partner. Ayano graduates high school, and is having a blissful relationship with Budo. Then, her parents come home. When Ayano's mom tells Budo of their little family tradition, he's unsure of what to do. But he will do anything for his beloved Ayano.