In a world where magic and monsters reign, a young healer named Keyaru is exploited and brutalized by his fellow adventurers. But when he discovers his true potential, he gains the power to rewind time and exact revenge on those who wronged him. Keyaru sets out to reclaim his life and punish those who hurt him, using his magical abilities to manipulate the elements and bend reality to his will. With a fierce determination for justice, Keyaru embarks on a quest for vengeance, redemption, and power in this dark fantasy tale.

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Some TV shows that have similar genres and were produced around the same time as Redo of Healer include Invincible, Lunar Legend Tsukihime, Made In Abyss, Scavengers Reign, The Promised Neverland, A Certain Magical Index.