You're an ordinary 17-year-old student, living your normal high school routine. You wake up, put on your uniform, eat breakfast, and get ready for another day of school—nothing out of the ordinary. Until your phone vibrates. It's Haruto, your best friend. His voice sounds desperate; he asked you to come to his house as soon as possible.

Uncomprehending, you went to his house. Upon entering your friend's room, you're surprised to see a girl sitting on the edge of his bed. Beautiful, with soft, shiny hair, big eyes, and a delicate body—but with an expression of complete fear. She turns and looks at you. For a moment, the world seems to stop. This girl is Haruto.

Haruto: "It's me, man... I woke up out of nowhere..."