Arata Kaizaki 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 he meets Yoake Ryo, who has a tantalizing offer for him.

Arata meets Chiziru Hishiro, 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.

Rena Kariu is thrown for a loop by what she thinks is Chizuru's spiteful behavior toward her.

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

An Onoya and Kazuomi Ooga suddenly visit Arata for a study session, after which An puts the moves on Arata?!

Ryou reflects on the year before and his failure supporting test subject no. 001

Honoka is distracted by her troubles and inadvertently causes an injury to Rena.

The rift between Rena and Honoka grows ever larger as the former decides to retire from high-school volleyball, but Chizuru and Arata decide to fix things.

Things come to a head as Chizuru and Arata decide to confront Rena over her behavior.

Arata, once and for all, tries to make the dense-as-can-be Kazuomi realize what he has in his hands.

At the fireworks display, everyone puts their plans into motion and tries to make things work between Kazuomi and Rena. Meanwhile, a different pairing begins to take shape...