Kinktober 07 - Rubber (Pixiv Fanbox)

I've always wanted to draw this concept after seeing some furry art centered around it ^^ And I've always found these boys absolutely adorable, but feel compelled to draw all four together- this was the only prompt that allowed it since I could cheat quite a bit.

These contraptions are known as "Panel Toys". Once the liquid rubber tendrils drag you inside, you're transformed to nothing but a squirming rubber-coated butt on display. Your hole is replaced with a rubber onahole, you're kept unbearably hard and horny but unable to cum, and your loudest protests are just the faintest mmphs. The arousal and pleasure of being used is so overwhelming the victim's struggles eventually turn from trying to escape to trying to entice passer-byes to use him.