Sarashina Tsumugi is a new transfer student who is thrilled to finally be able to go to the school her mother graduated from. It's still summer break, but Tsumugi arrives at the school early for an assembly....

Ms. Aoshika is not only divorced, but an underappreciated teacher at her job. But one drunken mishap leads her to witness firsthand the brutal assault and murder of a young man. However, after fainting, she ...