Kokuhaku

After calling off her engagement in the wake of a tragic revelation, Yuuko Moriguchi had nothing to live for except her only child, four-year-old child, Manami. Now, following an accident on the grounds of the middle school where she teaches, Yuuko has given up and tendered her resignation.

But first she has one last lecture to deliver. She tells a story that upends everything her students ever thought they knew about two of their peers, and sets in motion a diabolical plot for revenge.

(Source: Hachette Book Group)