My bad.
There's been a lot of people being cranky about the wait lately, both here and on Ulmf.
A while ago the Minotaur Statue would require a certain amount of Wooden Balls in order for the user to not get stuck when using it, so the arenas would be there for the player to earn enough of them in order to progress, but then Eluku opted to make the arenas mandatory by implementing a ticket system. Complete a room, you get a token, get all three tokens, you get a ticket, use the ticket on the Minotaur Statue and you'll be allowed to have the penis parasite removed. That way, grindy players wouldn't be able to bypass the arenas by already having enough wooden balls to operate the Minotaur Statue.
Wait the penis parasite will be able to be removed? Sad, I think the futa scenes are one of the best the game has, including the Harpies, I know there'll probably be more futa content in the futre but still