The Regression of Great Sage Riddle | GOGOAnime

Synopsis:

A young man named Riddle loses all his friends—and his world—at the hands of a mysterious group known as the “Trouble Box.” With no hope of survival, he despairs until his final release. What if… he could return before it all ended? So, after a thousand years, the corrupted Riddle is finally able to turn back time. “I will stop them now…!” Armed with thousands of years of knowledge and experience in his young body, the Riddler’s mysterious journey into the past is now revealed!