第 29 集: 小五郎調查日向的過去，小百合的戀情產生變化
Kousaku saves a girl from delinquent members of Kokuryu High Schools boxing club, so they decide to beat up Kousaku, until Hibari beats them up instead. The girl, Koenji Sayuri, develops a crush on Kousaku. A strange man harasses Tsubame and Suzume then breaks into the Oozora house and peeks on Hibari in the bath. This gives Ibari another heart attack. The man turns out to be Shirachi Kogoro, a private detective hired by Sayuri to investigate Kousaku and his relationship with Hibari. He discovers that Hibari was assigned male at birth. Sayuri swears to defeat Hibari and take Kousaku, revealing her darker, evil side. She pretends to be ill so Kousaku invites her into the house. Shiina warns Hibari Sayuri falls in love with every man she meets and can be dangerous. Sayuri tries to seduce Kousaku but is caught by Hibari, so she reveals she knows Hibari is transgender and promises to save Kousaku from his life of perverts and Yakuza. Sabu, who is childhood friends with Kogoro, convinces him to tell Sayuri he was mistaken and Hibari is really a girl. However this becomes unnecessary after Kaji saves Sayuri from dogs and she develops a crush on him, completely forgetting about Kousaku. (Source: Wikipedia)