He doesn't really have much choice

"Well boy," the shemale demon smirked as she said to Aaralon, "lucky that you already have all this lubricant in your tight asshole, you probably will enjoy it better that way." With one of her hands holding the wizard acolyte's hands behind his back, she used the other to guide her massive pecker to the boy's tight, but no longer virgin, anus. Leaning forward and letting out a whisper, "don't worry sweet thing, you will enjoy it too, I promise," before licking Aaralon's earlobe which got a sigh of pleasure out of him.

With that, the tranny demon immediately started bucking her hips, thus thrusting her gigantic penis into the mage's sphincter, Aaralon's moaning denoted both pain and pleasure, as the demon woman's dick was far larger than Memp's he was being stretched further than he had previously been. With each thrust the ladyboy demon's enormous schlong slid past Aaralon's sensitive prostate, heightening his pleasure and stiffening his own member.

Reaching down for her plaything's prick the demoness laughed, "oh it looks like my little manslut is getting aroused..."