Thursday night, 10:35 p.m.

Na-Yool, who now lay face down on Si-Jin’s desk, was getting the doggy style treatment. Si-Jin rammed his body upwards while he lifted her ass with a firm grasp and placed his fingers in her mouth.

The arm that vainly supported her body had long failed to contain her intense excitement. Her hands rested inertly, unable to even grab the desk. Every time Si-Jin’s penis grinded deep inside, her body swung like a rag doll, followed by the rustling sound of papers underneath each time her breasts got crushed against the desk.

Of course, despite such a lewd appearance, Na-Yool was quite “decent”. On the top, a blouse with no unbuttoned button. On the bottom, shoes and stockings… or so to say, her stockings pooled at her thighs up to just above the knees, were about decent. If it was not for her skirt, pulled up to her waist, and both her panty and pantyhose pulled down to her thighs, she could be considered decent.

So there she was, in a somewhat decent outfit, as she exposed her pale ass to a man while she stuck it out in a promiscuous way. That is what she was doing right now. No matter how unbelievable it might sound.

As for Si-Jin, his looks were not much different. He wore a neat outfit from head to toe with only his zipper open and his belt that rested on his hips, he was having sex just like that. As if using just the bare necessities to have sex.

Na-Yool had thought that, if it was not for their lower regions slapping, they would not see any skin from each other and of course it would be far less embarrassing. At first, she was confident about it. That is, while she pretended to not be affected one bit when he gently stroked and dug her bottom, or to be very much used to this situation. And, once they were done, they could right away get back to normal. How convenient it was!

However, having sex with only that ‘bare necessities’ had turned out to be way more mortifying for Na-Yool than being in a bright hotel room with a boyfriend, completely naked for the first time in front of each other. It was to the point she could die of embarrassment.

Because right now, both of them felt like nothing more than beasts. Even the way their bodies were locked together was bestial.

Unfortunately, the realization of it came belatedly. And the awful shame of feeling so bestial, in fact, caused Na-Yool an excitement greater than ever.

For real, this might kill me if it keeps going on.

Was there something wrong with her head? Had she gone crazy after sleeping a few times with Si-Jin? Suspicions naturally took over her. Of course, she also felt scared and mortified by her own actions. But at least now, all that was a later problem.

Si-Jin’s hand slid from her pelvis down to her lower abdomen. As his big palm wrapped around, she thought he would caress it, but instead he curled his fingers in her wet bush and pressed her sensitive bud.

“fhuung, ung.., haa-ng…”

Instead of ending it with a slow and shallow insertion, his touch persistently tormented her, as it rubbed up and down a thousand times. Na-Yool sucked his fingers and shook her hips with a soft moan, as if to take him in from both her mouth and lower opening at the same time.

“For being so adamant, you sure are sucking it in well.”

“…Hmph…, hnnn…”

“For real, who did you learn from?”

Somehow, Si-Jin’s tone sounded faintly disgruntled. As if to bully her, he pushed his penis all the way in while he maintained a steady grind against her inner walls. Na-Yool’s legs, which were barely held on, were unable to withstand this momentum and collapsed.

She had barely climaxed. But Si-Jin grunted, as if it was not his responsibility:

“How many times did you come by yourself already?”

It hit the spot – especially coming from him. It was a dozen times more mortifying that the voice belonged to the only person she did not want to show her lowest point to but at that thought, Na-Yool trembled with greater excitement.

…This made no doubt that she had gone mad.