Asura Machina

S1, E1: Three years after the plane crash, Tomoharu Natsume lives peacefully with the ghost of his childhood friend who disappeared in the same crash. However, the day before entering Rakurowa High School, he is met by a mysterious woman. Told not to hold on to it no matter what, Tomoharu is perplexed by the silver trunk she gives him. But things were already moving into action... That night, Tomoharu is attacked by a beautiful shrine maiden with inhuman beauty and power. Her target is the trunk...!