When Hibari wakes up, she finds herself in a strange room, where she meets seven other girls in the same situation.
An announcement is made overhead the confused girls. “Only one girl, who survives until the end, will be able to leave the building.” “Even if only for a second, we recommend you try to survive for as long as possible. Give it your all, and you may even be able to use magic.”

A few days after the girls’ incomprehensible co-living begins, an incident finally occurs. Hibari regretted not being able to stop the scene of death that occurred right in front of her. “If only I could go back to before she died…”

The following day, Hibari wakes up and heads to the cafeteria, only to find the girl that was supposed to be dead is still alive as she was the day prior.

The ability to travel back in time.

With this power, you can start over as many times as necessary. No one will ever have to die again.