Robin has to swallow the loads

Steve felt his heart wrench. He was not gay: he knew he could not do it. Sucking ten dicks… even Chrissie and Hawkin’s slutty cheerleading squad would balk at blowing that many. But that meant he had to pick either Nancy or Robin to run this particular gauntlet.

Several high pitch squeals came from Nancy, then she groaned and fell silent. Steve’s heart fell as he realised she had just orgasmed on the tentacle inside of her. She was suffering enough… he could not subject her to even more punishment.

He turned to look at their fellow prisoner. “I’m so sorry, Robin.”

She just stared back at him, aghast.

“Hmm,” Vecna said. “Have you ever sucked a dick, Robin Buckley?”

“No.”

“Well then, this experience will teach you,” Vecna flexed his fingers and Robin’s legs were released from the tentacles so that she slid down to the ground. The phallic tentacles started sliding past their monstrous master, rearing up over the girl.

Robin eyed Vecna apprehensively. “What happens if I don’t do it? You can’t make me, right?”

“You will not be physically forced, no,” Vecna said. “But I would remind you of the tentacles coiled around yours and Steve Harrington’s genitals, and the other tendril fucking your friend down there on the floor. To refuse to take part in these challenges… I do not think it would go well for you.”

Robin made a face. “Fine.”