世界でただ一人の毒魔法使い　～落ちこぼれの庶子、系統外魔法の力で最強へと至る～ (Associated Names)

On the day he became an adult, Rondo, an illegitimate child of the house of Margrave Édouard, was ordered by his father to commit suicide through poison. Due to the Édouard family valuing magical talent above all else, someone like Rondo who has no aptitude in any of the four elements of magic did not…