Monster future!Jon in heat. Hiding in the tunnels, feeling both stripped bare vulnerable and like it has a hair-trigger temper. Needs to breed and be bred. Past!Jon looking for it, finding it, this huge beautiful monster and it’s so wet and so hard and its looking at him like it hasn’t decided how it wants to devour him. He’s terrified. He’s soaking wet. Gaze slipping between its piercing, staring eyes and it’s erect cock, swollen at the base where the knot will form. He could probably escape, if he backed away slowly. Let himself slip back into the darkness slowly and calmly. Instead he turns, and he runs.
Elias who is also Very aroused about the idea of fucking a monster through its heat. Having it wet and desperate for breeding underneath him. Who is also, perhaps, a little bit worried that this terrifying future version of Jon is going to fuck his archivist to death (concept he is a normal amount of horny for). And who above all else would really like to observe future!Jon with all its limbs (plus tail) coiled around past!Jon to keep him in place while it ruthlessly pounds him, cum and slick dripping from his swollen cunt, womb already filled with its seed and making him look like he’s well into the first trimester already…
And of course he ends up sharing monster!Jon. Somebody needs to use its cunt, and clearly past!Jon is too out of it to do anything but take his future self’s cock. Need future!Jon knotted inside past!Jon. Panting and fucked out, eyes a little glassy and mouth half-open as it feels Elias’ hard cock bumping at its folds, sinking inside with no prep (but it didn’t need any, did it? Cunt wet and open and welcoming, body ready for breeding…). Every thrust just hard enough to jostle it, have both Jon’s gasping and moaning from the sensation…..