To Shinjirou, there's nothing sexual about it. The fear of it becoming far more than just mildly unpleasant within the blink of an eye keeps him on edge. Always ready to punch Jade for tricking him into a false sense of security. In the end, however, the pain is his own body's fault.

It's a reflex he can't control forever. He should have expected that. His cock stiffens in Jade's hand and that, that is the exact moment his stomach turns. The pressure coming from inside is far worse than any that could come from outside. He clenches his teeth, pulling his knees up and his groin away from Jade's hand.

The skin is bursting, tearing, bleeding, he thinks and no, when he looks down he can see that's not what's happening, but. He's convinced some inner force is trying to make him shed all the layers of skin until there's no place for bruises anymore.