Shy student Taiyo's life is threatened when his vice principal reveals a dark secret.

With the other siblings' help, Taiyo and Mutsumi overcome Kyoichiro's interference and become husband and wife; Taiyo is shocked to learn that someone has set a bomb in his house.

Taiyo's training leads to a hellish life at the Yozakura Mansion, causing anguish for Mutsumi.

Mutsumi discovers that Kengo has turned in an incomplete report and asks him to re-submit it; she snaps when Kengo blows her off, he escapes before she can punish him; Mutsumi shuts down the entire mansion and tries to find Kengo.

Videos of Taiyo's fights begin to circulate on the dark web; Taiyo is picked up by Hotokeyama, who claims to be an agent and accuses him of working for a secret organisation.

Obsessed stalker Ayaka transfers to Taiyo's class, and aims to kill her crush after a data leak.