Kagerou Meikyuu

Souji Kushiki is a high-achieving student and talented athlete from an affluent background. Upon returning home from boarding school, he notices unsettling changes in his sisters—Harumi, Youko, and Saki. Their behavior has become strangely clingy, crossing into inappropriate and bizarre territory, though Souji initially dismisses their odd conduct. The situation takes a dark turn when Souji returns to school the following day. He learns that during the summer break, one of his classmates was pushed to his death in front of a subway train, while two other students were stabbed by an unknown assailant. As Souji grapples with these tragedies, he begins to wonder if the victims are connected and whether his sisters’ strange behavior is linked to the murders.