A swordsman can "never" win against a magician. In a world where magic is supreme, Craze, the second son of the Marquis of Reynostia, is reborn in a body that lacks magical circuits and cannot use magic at all. However, he realizes that he has been reincarnated in a body that allows him to display his talent with the sword, which he was not blessed with in his previous life, to the fullest extent. At that moment, he struggles to suppress the joy that wells up inside him. The pleasure of being able to devote all of himself to the sword.... Through the roadside slayings of demons and confrontations with dark wizards, Craze hones his swordsmanship beyond reason, and even moves the heart of Arcelia, a beautiful magic genius with vacant eyes.... A heretical swordsman cuts through sorcery. The start of the fantasy of the master swordsman Warriors of Reiwa!