麻衣とのお泊りデートのはずのクリスマスイブに、アルバイト先の塾の生徒である姫路紗良とデートをするという夢を見た咲太。同じ夢を見た当の紗良は、自らが思春期症候群だと咲太に告げ、自分の思春期症候群を治さないでほしいと話した。
紗良は失恋後に思春期症候群になったことで、抱えていた不安が解消され、“モテる”毎日が楽しいのだという。
彼女を諭す咲太。すると、紗良は挑発するように尋ねる。「どうすれば、咲太せんせみたいに、人を好きになれますか？」
Sakuta dreams that on Christmas Eve, when he is meant to have a sleepover date with Mai, he instead goes on a date with a student named Sara Himeji from the cram school where he works. The Sara in question has the same dream as Sakuta and goes on to confess that she has her own Puberty Syndrome. However, she says that she does not want her Puberty Syndrome to be fixed. Sara developed Puberty Syndrome after a heartbreak, and the symptoms of her syndrome ease her anxiety by making her popular with guys, which she has been enjoying.
Sakuta warns her that this is a dangerous move. To which she retorts to provoke him, “What should I do so that I can love people. Like you do, Mr. Sakuta?”
Sakuta quer descobrir o tipo da síndrome da sua aluna e saber se isso representa perigo para Mai.
Pese a sus reparos, Sakuta decide centrarse en la tarea que le dejó Sara Himeji.
فوتابا تستشير أزوساغاوا عن مسألة تتعلّق بالحُبّ. يحاول أزوساغاوا أن يغشّ بشأن الواجب المُكلّف به.
Sakuta ne parvient pas à décrypter le syndrome de Sara. Il essaie alors d'en savoir plus grâce à Kasai.
Sakuta versucht mit allen Mitteln, das Rätsel um Saras Pubertätssyndrom zu lösen.
Sakuta deve venire a capo della sindrome adolescenziale di Sara, una sua allieva.
Канун Рождества — правда горячая пора для влюблённых. Не даром же все бросились просить совета у Сакуты!
