Him being able to gain muscles with his ai/robot helper? makes sense but i remember there being stats like "nose 4%" or so, i feel like unless he was a teen at a start or so and aging up, if some other parts of his body that's not muscle and vocal training suddenly improve there'd be ppl just making articles about him getting like, plastic surgery, which might be a bit more accepted in Korea, not sure if among the acting/musical industry but it would be a bit odd for him to change suddenly, hair cut and posture/new clothes aside, other than him 'projecting an aura' to where ppl wouldn't think it's weird that he's "more handsome all of a sudden" or so