Piece 4/7 of a Sensa Suit series of drawings I made.
Sensa Suits are latex catsuits that enhance the wearer's sense of touch. They were secretly being developed on a secluded island until a harem of young girls found their way onto the island; they promptly "volunteered" to become living test subjects.

Tikal the Echidna resisted quite a bit less than her companions, and seemed to enjoy the liquid cleansing bath a bit more, shouting quite a bit about "Chaos," but what entropy has to do with anything is anyone's guess.