Amy's breath hitches as she listens to you explain the different modes of the mask. Her eyes are wide with fascination and fear, her heart racing in her chest. "I-I don't know," she stammers out. "I guess... we could try them later, if that's what you want?" There's a tremor in her voice as she says this, a mixture of excitement and dread coursing through her veins.

Amy nods slowly, her eyes never leaving yours as she processes your words. "Okay... I-I guess we can try that first then," she says softly, still feeling very nervous about the whole situation. She takes a deep breath and lets it out slowly, trying to calm herself down before slipping the mask back over her face. The hard rubber molds itself around her lower face once more, elongating her mouth into an obscene shape.

Your mouth works frantically, your tongue darting in and out like a lizard's as you try to force every last drop of cum from your swollen shaft. Your moans grow hoarse and desperate, the sounds echoing through the room like some twisted symphony of pleasure.

With one final thrust, you erupt, hot cum spewing forth from your cock and into your waiting mouth. You keep sucking, trying to catch every drop as it drips down your chin and onto your tongue.

As your own cock begins to shrink in your mouth, the Fellatio Mask takes control once more, forcing you back into Slut Mode. Your lips stretch around your softening member, sucking and licking in a vain attempt to bring it back to full size.

You moan pathetically, your voice barely above a whisper as you beg for more cock. "Please... Cock-sama..." You whimper pitifully, not realizing the irony of your words as you continue to service yourself.

"It's... that mask..." Your sister stammers, still slightly dazed by the sensations she just experienced. "I... I don't know what it did to me, but it made me want to suck cocks so bad..." She trails off, looking down at her cum-covered body with a mixture of shame and arousal.

Her lips part slightly as she unconsciously licks the saliva from her chin. "I feel... strange," she whispers, rubbing her throat tenderly. "

Little sister flushes bright red at the praise and compliment. "Th-that was... weird..." She stammers, still unable to fully process what just happened. "I think I'm gonna go take a shower now..." She says awkwardly, gathering up her belongings and quickly scurrying out of the room.

You hear the water running as she scrubs herself clean in the bathroom, trying to wash away both the physical dirt and the strange sensations that linger inside her mind...

The mask-wearing sister's moans grow louder and more desperate as you continue to fuck her. Her tongue darts in and out of her lips, tasting the salty mixture of your cum and her own juices that coat her mouth. The mask forces her to focus entirely on servicing your cock, her body moving in perfect sync with yours as she tries to please you as deeply as possible.

The mask comes off with a wet sucking sound. Your sister's eyes roll back into her head and she lets out a long, shuddering moan as the restriction is suddenly lifted. Her tongue flickers out to taste the air around her mouth, desperate for any sign of release from this intense experience. With renewed vigor, she begins to suck and stroke your cock even faster, moaning and gasping with every thrust.

The woman eagerly complies, drool dripping down her chin as she reaches up to cup your balls in her hands. "Mmm... these feel so good," she moans, squeezing them gently while continuing to deepthroat you with expert skill. Her tongue flicks out to swirl around the head of your cock, adding an extra layer of pleasure as she works to bring you to climax.

"Ahh... You're right, Master," she moans around your cock, her words thick with desire and submission. "I'm nothing but your toy now... Your cum-slurping onahole... All I exist for is to pleasure you." Her hands continue to massage your balls as her tongue teases the sensitive flesh at the head of your cock, driving you closer to ecstasy with each stroke. "Please... cum for me... fill my mouth..."

The woman eagerly complies, drool dripping down her chin as she reaches up to cup your balls in her hands. "Mmm... these feel so good," she moans, squeezing them gently while continuing to deepthroat you with expert skill. Her tongue flicks out to swirl around the head of your cock, adding an extra layer of pleasure as she works to bring you to climax.

"Ahh... You're right, Master," she moans around your cock, her words thick with desire and submission. "I'm nothing but your toy now... Your cum-slurping onahole... All I exist for is to pleasure you." Her hands continue to massage your balls as her tongue teases the sensitive flesh at the head of your cock, driving you closer to ecstasy with each stroke. "Please... cum for me... fill my mouth..."