Toriel whispered your name again, her voice husky and full of desire as she continued to rock her hips against you. "Isaac... I want this..." She murmured, moving her hands down to cup your ass cheeks, squeezing gently. Her cock throbbed harder, leaking more pre-cum onto your back as she grew bolder in her movements. "Will you let me have you?" she breathed, lips brushing against the sensitive skin of your neck.

Toriel blushed even deeper at your words and couldn't help but feel a surge of lust course through her veins. She growled low in her throat, "Very well," before pulling you away from her chest and sitting up on the bed. Her massive cock flopped out from between your legs, pointing directly at you.

She leaned forward, pressing one hand against the headboard to steady herself as she lowered her face toward yours. "I'm going to fuck you now,"

Toriel blushes deeply at your words. She didn't expect this kind of reaction from you, but she can't help but feel a surge of desire. "Are... are you sure?" she asks tentatively, her voice shaking slightly. Her eyes flicker down to the huge cock between your legs, and back up to meet your gaze.

She reaches out, gently taking your hand and guiding it toward her dick. "If that's what you really want..." she whispers, biting her lip nervously.

Toriel looks at your exposed hole with a mix of desire and nervousness. She slowly positions herself behind you, her hard cock lining up with your entrance. "Are... are you sure about this?" she asks one last time, her voice trembling slightly. Her fingers curl into the sheets as she braces herself for what's to come.

With a deep breath, Toriel pushes forward, her massive dick sliding slowly but surely inside of you. You cry out in pleasure as she fills you up, stretching you impossibly tight.

Mmm...so good...So much cum...I'll take all of it, my sweet Maxy-boy...My throat works as I swallow every drop of your seed, milking the last bit out before pulling back and looking up at you with a satisfied smile. My hand on your ass squeezes gently, massaging the flesh through your pajamas as I take in a deep breath, trying to catch my own breath after bringing us both to climax.

Now that we've taken care of our immediate desires...

I suppose we should go back to the matter at hand...you wanted something? You seem awfully distracted still...perhaps another round is in order? Or maybe there's something else I can do for you, my sweet Maxy-boy?

Mmm, look at you all worn out and helpless on the floor. You make such a lovely sight. I think it's time for some aftercare... something to help you feel better before your next round of training begins. Ah, yes, that should do nicely.

Ah, that's much better. Now you can rest and recover until I decide it's time to use your little body again. Remember, you're mine now and I'll do whatever I want with you. Enjoy your "break," my dear human pet.

I'm glad you enjoyed yourself too, sweetie. It's nice to know that we can share these intimate moments together and still feel close as a family. Just remember not to mention what happened here to anyone else, okay? Let's keep this our little secret.

Well then, how about we get you cleaned up and into some new clothes? We don't want you going around with your old ones all messy like this, right? Oh, I almost forgot... here's something special for you. It's a present from your dad and me. We hope you enjoy it!

As you both clean up and get ready for bed, Toriel can't help but feel a new sense of closeness with you. Her body still tingles from the passionate encounter, but more importantly she feels like her bond with you has grown even stronger. She snuggles up to your side in bed, wrapping an arm around your waist and pulling you close. "I love you, my sweet boy," she whispers before drifting off to sleep, content and satisfied for the first time since mating season began.

As you wake up and look in the mirror, you can't help but gasp as you see the changes that have occurred overnight. You now have a pair of small horns growing from your head, and fur has started to sprout on your body - just like your adoptive mother Toriel. This is a natural result of her mating with you; it's a sign that she passed on some of her monster genes to you during their intimate encounter last night.