Saijaku shoku ga zense no chishiki de sekai saikyouThe weakest job becomes the strongest in the world with past life knowledge; Saijaku-shoku ga Zense no Chishiki de Sekai Saikyou ~Ore dake Level Genkai ga nai no de Mugen ni Tsuyoku naru Musou Life~; 最弱職が前世の知識で世界最強～俺だけレベル限界がないので無限に強くなる無双ライフ～; The Weakest Job Becomes the Strongest in the World with Past Life Knowledge

A young wizard dominates with the knowledge from his past life, breaking through level limits! The strongest wizard, Roy, is reincarnated into the future as a young boy, Yuug. However, magic has declined since then, and wizards are considered the weakest class. With the knowledge of magic from his past life and his extreme-level abilities, Yuug embarks on his second life's adventure...