The Reincarnation of the Strongest Exorcist in Another World Trailer.

Powerful exorcist Haruyoshi Kugano is betrayed and fatally wounded by his student. Using a reincarnation spell to be reborn, Haruyoshi vows to become unbeatable in his new life. However, his spell goes awry; rather than being reborn in Japan, his soul ends up in another world similar to the European Medieval era. Reborn as Seika Lamprogue, he sees the world uses magic that functions differently than his art, though this doesn't deter him from his plans. He now just wants a peaceful life, but his curiosity and iota of compassion repeatedly lead him into trouble.