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.
A pumpkin lantern made of glass comes crashing down in a plaza, just as a social media post with the hashtag #DREAMING had predicted. Ikumi visits Sakuta at the university and passes him an invitation to their middle school reunion.
Sakuta from the other possible realm sends a message through Ikumi that reads, "Find Touko Kirishima, Mai-san is in danger." After seeing this message, he tries contacting the Miniskirt Santa, who claimed to be Touko Kirishima.
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. Sara goes on to confess that she has her own Puberty Syndrome.
