Ars, the prince of the Kingdom of Karitz, who was called the strongest wizard, died at a young age. But on the verge of death, he uses reincarnation magic. Reincarnated as Wals Sai, a slave with the best body! Wals, who became the escort of a princess in a small country, became a matchless slave who used her best body and magic to crush all enemies! From Become a Novelist! A fantasy adventure by the strongest slave, opening !! * Become a novelist is a registered trademark of Hina Project Co., Ltd.