Shiraishi Godou, an ordinary high school student, has a secret. He has a memory of his previous life.
In another world, different from this one, Godou was a “hero” who saved humanity. However, this is only the story of his previous life. In this life, it was supposed to be a normal student life, but the appearance of Shiina Mai, a girl who moved into the same class as him, changes his ordinary life.
She was a reincarnated witch like Godou, who once plunged another world into disaster. They had killed each other many times in their previous lives, but when Godou asks her what she wants now, Mai tells him.
“I can’t live without you!”
” What …?”