Chaoci is a fast time traveler with excellent performance. His task is the humble spare tire of the protagonist, the kind that does not end well. No one does this kind of thankless work, but Chaoci does it for bonuses and performance. After finishing all the missions and getting the bonus, Chaoci was pulled back after a few days. I heard that the protagonist regretted every facet he had conquered, and forced him back... ...exm?!