Prologue 1: It's not an accident?

He didn't expect that he would be giving his life to save a child. He never could have guessed that his soul would be whisked away by the death goddess from another world and offered a new life in her world. The price: a mistake on both of their parts irreversably reincarnated him as a woman, and a demon; a succubus.

In a world of fantasy and magic, his death was only the beginning of her new adventure.