Stop!! Hibari-kun! Episode 31 English Subbed Episode Title:Invite Everyone to a Merry Birthday!!.Episode Description:Hibari and Seiji show their Christmas costumes, in Hibari's case, pink lingerie which enrages Ibari. Suzume's birthday is on Christmas Eve so Ibari plans a party. Hibari's shameless flirting with Kösaku gives Ibari another heart attack. Hibari invites the boxing club while Kösaku invites Rie, but she already has plans with Shiina. However Shiina hears about the Özora's party and invites himself, hoping to seduce Hibari. Kösaku finally snaps after seeing Shiina upset Rie again and brawls with him. Kösaku decides he needs to tell Rie Hibari is a boy, and Hibari agrees. However, when Kösaku tries to tell Rie the truth he decides it is not worth the risk...