Yandere!Perverted!Neighbor x Reader
content: gender neutral reader, NSFW (mentions of intercourse and masturbation), underwear theft, obsessive behavior
Your neighbor keeps to himself. You would’ve wholeheartedly believed the apartment next to yours was empty or abandoned if you hadn’t encountered its occupant several times on your way back home. Given the odd hours you find yourself sharing an elevator, you deduced he must be working from home. A quiet, well-mannered man who doesn’t impose for longer than a formal greeting.
Your Yandere!Neighbor never expected to look in the mirror and see a deranged pervert, you know. It is but the truth. He’d originally perceived you as nothing more than another human in his vicinity, perhaps even a tad annoying: he would’ve been perfectly content with skipping pleasantries and ignoring each other’s existence, yet you always insisted on offering him a warm smile and a hello that was too loud for his tired ears.
Then you brought your boyfriend over.
It was an awkward, unexpected accident, and – if he is to be honest – mainly your own fault. He never intended to eavesdrop. He was minding his business, scrolling through data sheets and tables, when he could discern a faint whimper coming from beyond the wall; were you moaning? He pushed his glasses up his nose and let out an irritated huff. You were a grown adult and pleasant to the eye, of course you’d be having sex every now and then. Why would you make him an unwilling witness, though? Christ, he thought, whoever was fucking you couldn’t have been that good.
He rose from his seat, ready to give you the mutually embarrassing suggestion of toning it down. To his great shock, however, he stood still, unable to move. His ears were greedily picking up each hint of ecstasy. Ah, what shameless curiosity! He’d just been exposed to your most vulnerable self. You had no idea he could hear your desperate, babbled words and your whines. You were unknowingly coming undone right next to your neighbor, a complete stranger, separated only by a thin wall.
A twisted glimpse of intimacy, a spontaneous act of voyeurism that left him yearning for more. That’s all it took for him to lose any shred of decency. Outrageous, he is well-aware, but the temptation is too great; its tendrils have crept all the way into his heart, and – although a downright indecent observation – all the way down to his groin. He might’ve or might’ve not palmed a persistent erection throughout your unintentional charade. He might’ve or might’ve not come into his own hands, trembling from the sheer memories of your breaking voice.
An unfortunate affair, truly. He never intended to become a despicable individual. He never would’ve guessed, not even in his wildest dreams, that the image of you being fucked would awaken such an unmovable, unquenchable obsession. How far will his maddening desires take him?
“It’s strange,” you tell your boyfriend on the other side of the wall, “I could’ve sworn I washed my new underwear. Can’t find it anywhere.”
Criminal. He should be put in handcuffs, yet he continues to inhale the thin fabric crumpled in his fist. Good God, he’s hopeless. It makes him even harder to hear your remarks on his deed.
At last, the most dangerous question begins to bloom in his mind. A sheepish curiosity, a mere hypothetical that surely wouldn’t lead anywhere further: what if he were the one fucking you? Nonsense, naturally, nothing but playful banter. Oh, but he’d do such a good job. He’s sure of it. No, no, enough of this. He wouldn’t dare to interfere with your relationship. He’d never-
Too late. His knuckles drum against your door in desperation. He’s just saying hello, where’s the hurt in that?