Daikenja Riddle no Jikan Gyakko — Episode 6

The story follows Riddle, a young man who lost his companions to a mysterious group known as the "Box of Malice." On the brink of despair, after 1,000 years, Riddle eventually achieves the ability to reverse time. With a thousand years of knowledge and experience, the Great Sage Riddle journeys to the past. (Source: Anime News Network)