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.
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.
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.
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.
