I never thought about it, but since Puchis have pure white skin, the sun is probably a major nemesis.
Only Shinkaisei-kan puchi and Akitsu Maru puchi have pale skin, the other puchi don't have it.
It has merely turned red!Wait, don't you touch it!It cannot be helped.IT STIIIIINGS!ARGHHHHHHHHHH!Okay, let's dock!If you don't get used to it bit by bit, it's gonna sting...I guess even Abyssal Ships can get red skin, more or less.This is perfect timing, so let's just head into the bath as-is.