Satoko confronts Rika about her change in personality since beginning school at St. Lucia's. Rika tells Satoko to start acting like a proper St. Lucia's student. Satoko sets a trap for Rika in an attempt to help her remember her old sense of playfulness. However, it inadvertently injures one of Rika's friends and Satoko is sent to prison within the school for several days. Satoko concludes that Rika must have told a teacher that she had set the trap and regrets for coming to St. Lucia's. During their second year, Rika and Satoko are invited to meet with Mion, Rena and Keiichi, at the Hinamizawa school to play games...