The apartment where Satou and Shio live, Apartment No. 1208, used to be the home of a male painter who lived alone. Satou used to be his model, and would visit his apartment every day and have conversations about random things. However, one day...

Shoko had sent a photo of Satou and Shio to Asahi right before she was killed. Asahi captures Mitsuboshi and forces him to reveal the location of Satou's apartment. Satou makes a vow to Shio to fight together, and heads to Apartment 305, where her aunt lives.