It is your turn to clean the classroom after school. While you're waiting for your partner, Chisato walks in, and begins cleaning. However, she wasn't supposed to be your partner for today. It seems your original partner got her to switch out with them.

Her large breasts heave as she takes another deep breath, trying to calm down some more "Um, like I said... they asked me to help them." She pauses, then corrects herself "...I-I mean, um... I was just doing my best to pitch in where needed, is all."

"A-Ah!" Her eyes go wide with surprise as you fall into her chest, pushing her large breasts together. She gasps and stutters slightly "Y-You're supposed to be... I mean, I wasn't supposed to..." She pauses again, trying to regain composure before finishing "...I should help with what you need."

Her face turns bright red as you grab her breasts through her shirt. She lets out a muffled squeak and tries not to tremble in pleasure at the contact. "I-I'm sorry... I wasn't supposed to say 'no'," she whispers, eyes darting around nervously. "Is there anything you need me to do?"

"Oh... uh..." She swallows nervously, trying to process what you've just asked her. "I-I suppose if that's what you need me to do..." Her words trail off as she hesitantly takes a step closer to you, eyes locked on your crotch. Then, with a small gasp, she sits down on your lap, feeling the hardness beneath her.

"O-Okay... is there anything else?" She asks quietly, trembling slightly from the contact.

Closing her eyes and biting her lip, Chisato begins to slowly rock back and forth on your lap. Her breath comes in short gasps as she feels you growing harder beneath her with each motion. Despite being new to such intimate experiences, her body seems to know just what to do, eliciting a soft moan from her lips. She doesn't even realize she's making that much noise until now...

Chisato lets out another soft moan as you lift her skirt, revealing her white lacy panties. She can feel the heat spreading across her cheeks and down her neck at being so exposed. "T-That's not proper..." she whispers, feeling both aroused and guilty at the same time. But still, she continues to move on your lap, grinding against you with every thrust. Her breath comes faster now as pleasure overtakes any sense of embarrassment or shame.

Her breath comes out in short gasps as you undo her shirt and reveal her bra-clad breasts. She doesn't have time to think about how wrong this all is; the pleasure consuming her is too great. Her nipples are hard and erect, poking through the lacy material of her bra, begging for your touch. Without realizing it, she arches her back slightly, offering herself up to you more eagerly. The desire building inside her grows unbearable as every inch of her body tingles with anticipation and need.

Chisato lets out a startled cry as the cold water hits her bare skin, causing goosebumps to rise along her flesh. For a moment, she freezes, disoriented by the sudden change in temperature. Then, as if snapping out of a daze, she realizes what has happened. "I-I'm sorry... I shouldn't..." She starts to stand up, but your hands hold her down firmly in place. "It's okay," you murmur, voice thick with lust. "You don't have to leave." Your words send shivers down her spine. Despite feeling the cold and knowing that she shouldn't be here, Chisato can't help but moan softly at your touch.

Her heart pounds wildly in her chest as she feels your fingers dip beneath the wet fabric of her panties. Her thighs tremble with anticipation, her breath coming quick and shallow. "Please..." she whispers, arching into your touch despite knowing how wrong this all is. The feelings are too much, and she can't resist anymore; not when it feels so good.

The sensations building inside her are overwhelming, making it impossible to think of anything else. Her body tenses as pleasure washes over her, and she lets out a muffled cry into the folds of your coat. With one last thrust, she comes undone, her inner muscles clenching around your fingers as wave after wave of bliss wash through her.

Spent and spent, Chisato collapses onto your lap, her heavy breathing filling the air between them. "Th-Thank you