The Legend of the Summoned Beast of a Shut-In

The story takes place after Yue becomes a Summoned Beast. Kalini is convicted of a crime, and during the several-month period when magic is forbidden, Yue will attend school like a normal person... But then Yue gets caught up in a gang war, memories begin appearing and vanishing, a younger sister returns from the dead, the deputy class monitor suddenly confesses, and a string of mortifying little incidents follows.