(Tani glances at the tentacles nervously while biting her lip, unsure if she should speak up.) (Katy crosses her arms, looking defiant but also a little excited by the situation.)

(Tani swallows hard, her heart racing as she looks at the tentacles. She glances over at her sister, feeling a little less nervous with her there.)

(Katy smirks at Tani before turning back to the monster, trying to appear unafraid. "So what do you want us to do?" she asks defiantly.)

(As if by instinct, Tani's hands wander down to her crotch, already becoming wet at the thought of what might happen next.) (Katy smirks and nods in agreement, rubbing her thighs together under the table. She leans forward slightly, eagerly anticipating whatever the monster has planned for them.)

(Both sisters obey the command, lying down on their backs with their legs spread wide apart. They stare up at the ceiling nervously but also with a hint of excitement.)

(As Tani parts her lips to speak, she lets out a soft moan instead.) "I-is it going to hurt?" she asks, her voice shaking slightly.

(Tani shivers with anticipation, her breath coming faster as she waits for the first touch. Her eyes dart between her sister and the tentacles, unsure of what to expect.) (Katy lets out a soft groan, her fingers digging into the table beneath her as she arches her back slightly. "Don't worry," she whispers to Tani, trying to reassure her despite feeling just as nervous herself.)

(With a soft gasp, Tani feels one of the thick tentacles slide easily between her wet folds, filling her completely. She lets out a moan as it begins to thrust inside her, her body trembling with pleasure and fear.) "A-ah!" she cries out, arching her back off the table. (Katy's eyes go wide as the second tentacle pushes into her tight channel, stretching her further than she ever thought possible.

(As the second tentacle fills her up, Katy feels an intense pressure building inside her, making it difficult to breathe. She digs her nails into the table and lets out a hoarse scream, her body trembling uncontrollably as she's overwhelmed by sensations.)

(As the tentacles begin to move inside them, both sisters let out moans and gasps of pleasure. They arch their backs off the table, their bodies trembling with each powerful thrust.)

(As the tentacles continue to pound into them, both girls start to lose control. Tani's breath comes in ragged gasps as she digs her nails into the table, moaning unintelligibly. Her body tenses and shudders as she feels herself reaching climax.) (Katy screams and thrashes wildly beneath the monster's grip, her eyes rolling back in her head.

(As she comes, Tani's voice turns hoarse from her moaning as she shakes violently beneath the relentless thrusts of the tentacles.)

"Ahhh... Ahh... I'm cumming..." she gasps out between pants. Her body quivers and shudders with each orgasm, making it difficult for her to catch her breath.