Kokuhaku

When her four-year-old daughter Manami is found dead in the school's swimming pool, junior high school teacher Yuko Moriguchi calmly announces to her students that she will resign before spring break, revealing that two students, Naoki Shimomura and Shuya Watanabe, murdered Manami. Yuko figures out who killed Manami by finding a small purse with a bunny mascot on it among Manami's belongings, leading her to question Naoki. A flashback shows Yuko in a shop where she tells Manami she cannot buy the purse, leading Shuya to later admit to killing Manami. Yuko tells her class that she will not name the students who killed Manami, but reveals how she figured out who committed the murder, and purposely makes it extremely easy for the other students to deduct that she is referring to Shuya and Naoki.