In a world where you die over and over

My choices have caused the deaths of many important people...

When Nanaki, a loner delinquent, was being beaten up by a group of delinquents, he was rescued by Hiyaka, the strong devil who is the head of the team at Kuroha Academy. Nanaki is attracted to the way of thinking of Hiyaka and joins the team with him...

From that day onward, Nanaki has been repeating the days when Hiyaka protects him many times and dies, returning to the day when he joined the team...

I change my choices over and over again, but the ending is always the same. He just wants his loved ones to live... This is a story about re-selecting countless choices.