突然咲太の前に現れたミニスカサンタ。“霧島透子”を名乗る彼女は、皆に思春期症候群をプレゼントして回っているのだという。そして、その視線の先には、咲太の中学時代のクラスメイトで、同じ大学の看護学科に通う赤城郁実がいた。
郁実のことが気になっていたこともあり、友人に誘われた看護学科の女子生徒たちとの合コンに参加した咲太。その席で、SNSに書き込んだ夢が、次々と正夢になると噂の「#夢見る」の話を聞いて……。
A Miniskirt Santa suddenly appears before Sakuta. She says her name is “Touko Kirishima” and claims to have been handing out Puberty Syndrome to people as gifts. Sakuta sees her eyes lock on Ikumi Akagi, a former middle school classmate who is attending the same university as Sakuta, studying in the nursing program. Curious about Ikumi, Sakuta goes on a group date with female nursing program students that his friend invited him to. There, they discuss a rumor about people’s dreams coming true after they post about them on social media with the hashtag #DREAMING...
O mistério aumenta mais em relação à Touko e novos eventos estranhos começam a acontecer.
Sakuta è preoccupato per Ikumi, una sua ex compagna di classe, dopo ciò che le ha detto Toko.
Sakuta rencontre la chanteuse Tôko Kirishima en mère Noël qui affirme distribuer les syndromes de la puberté.
Tras ver a una chica vestida de Papá Noel y descubrir qué regala, Sakuta tendrá que decidir qué hacer.
Сакута встречает певицу Токо Киришиму, Санта-Клауса, которая утверждает, что распространяет синдромы полового созревания.
