Some of the oxygen delivered turns into ROS, damaging the cells and causing them to blame the red blood cells. AA2153 gets an award for delivering the most oxygen out of the rookies, causing one of his friends, AC1677, to become jealous. The two find that the hair has not regrown and deliver oxygen to a dying sebaceous cell, but ROS from AC1677's delivery causes bad body odor. Now extremely resentful of AA2153's successes, AC1677 falls in with the veterans who bullied them and they get him addicted to caffeine and arginine, boosting his energy and allowing him to match AA2153's pace...