yesssss omg. imagining it's his first time being bred + erik's warned him that he has big loads when he knots — and of course charles just smiles greedily and says, "good". but then erik's draped over him growling and shuddering while his balls spasm and his knot throbs with each spurt of hot thick cum.... charles' womb feels so stretched, erik stuffing him full + fuller still, and he can't stop squirting from the pressure of it pressing against his bladder+ all his sensitive spots 😋 his eyes roll back and his mouth drops open as he comes over and over again, his cunt squirming around erik's considerable girth with each orgasmic contraction, hungrily milking erik's knot..............

once erik's calmed and his cock is just twitching inside erik, knot sealing all that cum inside charles like a massive girthy plug, he rolls charles carefully onto his side and rubs charles' slightly swollen belly, thinking about how much bigger it will be once charles starts to grow their litter..... charles whimpering under his touch, feeling hyper-sensitive and vulnerable as erik's virile seed mercilessly fertilizes his unguarded eggs 🫄