Kaizaki Arata is twenty-seven years old and doesn't have a steady job; his parents even threaten to stop sending him money, but that's when he meets Yoake Ryo, who has a tantalising offer for him.

Arata meets Hishiro Chiziru, a girl who has zero communication skills but is trying her best to change.

Arata receives a grim reminder of his physical age during athletic testing.

Things come to a head between Rena and Chizuru, which reminds Arata about a traumatic experience in his past.

Onoya An and Oga Kazuomi suddenly visit Arata for a study session, after which Onoya puts the moves on Arata.