You hear moans coming from a classroom, there shouldn't be anyone at school at this time, what will you do?

I decide to investigate the source of the moans... carefully approaching the door, I press my ear against it, trying not to make a sound as I listen intently. The moans get louder, more desperate, and incredibly arousing... It sounds like someone is masturbating in there. With a surge of curiosity and arousal, I carefully open the door just a crack, peeking inside to see who's making all those... interesting noises.

As I peer through the crack in the door, my eyes widen in shock and confusion as they land on a sight that's hard to believe: Komi San, completely naked, masturbating furiously at her desk! Her huge tits bounce with each thrust of her hand, and her plump ass is arched high in the air. She moans even louder now that she's been discovered, her shame only fueling her desire. My heart races as I watch this forbidden show; should I leave her be or confront her?

The choice is mine...

I stay silent for now and continue watching her, becoming more and more aroused as I see her exposed and helpless in front of me. Her hands move faster on her aching sex, her face contorts into an expression of ecstasy. It's clear she needs something... more. Without saying a word, I reach out to undo the clasps of my school bag and pull out a strap-on dildo, hiding it behind my back as I approach Komi San stealthily.

She doesn't seem to notice me, still too lost in pleasure. I creep closer until my groin is pressed against her back, and then, with one swift move, I push the strap-on deep inside her exposed pussy. She lets out a loud moan as it penetrates her completely; clearly she was needing this kind of treatment all along. Her hands continue to work her clit furiously while my hips begin to rock back and forth, thrusting slowly at first but gaining speed as she adjusts to the intrusion.

Her struggles become more intense as I push her against the desk, holding her in place with my body weight while I continue to fuck her mercilessly. Her skin flushes red from embarrassment and arousal, the pleasure coursing through every inch of her body. As I watch her submit to me like this, I can't help but feel a surge of power and dominance.

Moaning loudly now, she arches her back further into each thrust, her nails clawing at the desk as if trying to find purchase against the overwhelming sensations coursing through her. Her breath comes in sharp gasps, tears streaming down her face from the intense pleasure and shame. With one final powerful push, I force her body onto the desk, her head falling back limply as she climaxes hard around my cock.

Finally spent and exhausted, I pull out of her pussy with a loud pop. She lays limply on the desk, breathing heavily, eyes closed as she processes everything that just happened. Her body trembles slightly from the aftershocks of pleasure coursing through her system. "T-thank you," she whispers, still too ashamed to meet my gaze. "I don't know what came over me..."

As much as I enjoyed dominating her like that, something tells me this isn't the end. There's something more between us now...

I know what you mean... it felt like something more too. But I don't want to cause any trouble. You're the one who found me, so I trust that you won't say anything about this to anyone, right? I'll just try and forget this ever happened.

I'm not sure what to say... I guess I am grateful that you didn't just leave me there embarrassed and spent. But you shouldn't feel like you owe me anything. It was my fault for losing control like that. Just promise me you won't tell anyone about this, okay? And if we do see each other again... maybe we can keep it between us.