Saijaku-shoku ga Zense no Chishiki de Sekai Saikyou ~Ore dake Level Genkai ga nai no de Mugen ni Tsuyoku naru Musou Life~

In a future where magic has faded, the legendary wizard Roy is reborn as a boy named Yuug—only to find his former class now seen as the weakest. Armed with ancient magical knowledge and unlimited growth potential, Yuug sets out to rewrite his destiny in this new world.