She smiled malevolently and suddenly pushed his entire cock, down to the base, inside her mouth making him yelp in surprise and pleasure.
He tried to hold back a moan that was threatening to escape from his lips. She bobbed her head up and down rapidly, sucking on his cock. Her tongue was flicking on his tip, making him shiver in pleasure.
She took his cock out of her mouth and licked her lips, watching his pleasured face. "You want me to obey you? You foolish child, now beg me to stop it." Before he can recover, she again gulped his entire cock in one sweep.
He felt his legs buckling, trembling, and ready to give out. He pressed on the glass case for support as the demoness worked on his cock. 'This can't be? She won't win this again!'