Redo of Healer

Redo of Healer is a dark fantasy anime based on the light novel by Rui Tsukiyo. The story follows Keyaru, a healer who was abused and exploited by others because of his powers. After gaining the ability to rewind time, Keyaru goes back to the past and begins a brutal journey of revenge against those who wronged him. The series is known for its very dark themes, mature content, and revenge-driven story.