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The leather against his skin is uncomfortable, bordering on being nearly too tight as it digs into his neck. It’s rough and chafing, and he tries to take it off but his efforts are useless; the leather is thick and the buckle of the collar won’t budge. Viggo had made sure it wouldn’t when he had fastened it around his throat.
The only part of the collar that isn't purely restricting is the one cutout designed to do… well. Hiccup isn’t sure, but he knows it exists for a reason. Viggo wouldn’t have a cutout in the collar at all if it wasn’t there for a reason.
“Tsk. You won’t be getting that off, my dear. I suggest you stop trying, or I’ll have to restrain you further.” Viggo says.
Hiccup glares at the man, “What do you want?”
“Nothing much. Merely to test something I’ve recently acquired.” Viggo hums. “Are you familiar with Deathgripper venom?”
“Can’t say that I am…” Hiccup replies warily, watching as Viggo fills a vial that narrows into a sharp, thin tube on the end with a thick, glowing, purple liquid.
“Well you’re about to become very familiar with it, my dear.” Viggo steps closer to him, and Hiccup moves back until he hits a wall behind him.
The older man crowds him against the wall, grabbing a loop on the collar around Hiccup’s throat with a finger and yanking on it. He then uses the finger hooked around the loop to keep Hiccup from being able to move away as he lines up the vial with the cutout in the collar.
Hiccup hisses when the sharp tip pierces his skin, pushing deeper into his neck until the vial is secured within the cutout and won’t be dislodged from the collar unless someone were to purposefully take it out. He feels the venom inside begin to flow, the sensation burning and he claws at the collar, and at his own skin around it as he drops to his knees.
Then the venom works its way through his system, taking effect after a few minutes of agony, and Hiccup feels… nothing. His mind goes blank and foggy.
Viggo smiles down at the younger man whose eyes are glowing purple now as he kneels on the floor in front of Viggo, his mind now Viggo’s to control, awaiting his command.
That collar does look so lovely on his neck, it would be a shame to take it off. If the venom proves worth it, Viggo may just have to get more.
Oh, he’s going to have fun with Hiccup when he’s like this.