The Succubus and the Impossible Size
"You must be really rich, Oppa. Are you the son of a lord or something?"
A lord? What was she talking about? I stopped what I was doing—trying to insert myself—and stared at her in confusion. Yerim fidgeted with the duvet.
"I mean, commoners usually can't afford bedding filled with... feathers like this."
Commoners. That was a word you’d expect from some stuck-up rich girl. But a "lord"? Didn't lords only exist in medieval times? Come to think of it, she did say earlier that it had been a long time since she’d come to the human world... Wait. Just how old is this demon? Did I just have sex with a 600-year-old grandma?!
I suppressed my growing dread and asked, "Hey, by any chance... what year were you born?"
"Not by the Demon Realm calendar, but if we go by when Jesus was born..."
My head started spinning. Jesus... she was using the birth of Jesus as a benchmark... Damn it. Does that mean I just slept with a demon who’s nearly 2,000 years old? Well, she looks young, so does it matter? Is this a fetish thing?
Yerim wiggled her fingers and declared proudly, "I was born in January 2001, so... I’m just a little over twenty!"
She scared the hell out of me! She’s two years younger than me! As I wiped the cold sweat from my brow, I realized something strange. She was talking about lords and commoners, yet she claimed to be only twenty-one? Where on earth did she study society in the Demon Realm? The gap in her knowledge was a total mess.
The conversation had already killed my erection. Instead, I found myself fascinated by this place called the Demon Realm.
"Tell me, in the... Demon Realm... how do you learn about human society? And when did you learn to speak Korean?"
Yerim shook her head. "I never learned from anyone. I know about lords and commoners from reading old novels. As for Korean, I gained the ability to speak the language by using my demonic energy when I crossed the Gate."
Oh... a Gate, huh? That’s fascinating. When I showed interest, Yerim spoke up excitedly.
"But I did study the human world a lot through novels! A book called King Lear said that swineherds sleep with their pigs! They roll around in barns and sleep covered in straw. Commoners can't even turn on lights at night, and they can't afford candles. I read that and thought, 'Humans aren't any different from demons.' Low-level demons like me don't even have candles, so we can't do anything once the sun goes down. But Oppa’s room has dozens of candles, so you must be incredibly rich, right?"
Yerim smiled as if she’d hit the jackpot and leaned into me. Um, wait—don't tell me the reason she was so eager to sign the contract was... because of this? Because I looked rich?
I hesitated, not knowing what to say, and Yerim pulled the duvet up and lay down with me. She clung to my arm and stared at me intently. How was I supposed to explain this?
"These days, even... commoners live in houses like this. Do you... have any idea how many years have passed since the novels you were reading?"
Yerim blinked. She looked like a beautiful model from a TikTok video. Her innocent answer came back, "Is there a big difference?"
I buried my face in my hands. She learned about human society only through books, and those books were, what, 600 years old? If someone from the Joseon Dynasty time-traveled to the modern day, where would I even start? I turned on my phone and searched for King Lear. I knew Shakespeare wrote it, and the setting was around 1600. So, 400 years ago.
"Well... King Lear is a novel from 400 years ago. And, uh, it’s been about 200 years since kings and lords disappeared?"
But Yerim’s attention wasn't on King Lear; it was on my phone. She reached out, swiping across the screen, and gasped.
"What is this? Magic? A book?"
She zoomed in and out, staring at it in a daze. "Is it an artifact? A Palantír?"
Seeing her like this, I was certain she really didn't know anything.
"This is called a smartphone... You can talk to people far away, connect to the internet, and watch videos."
Yerim looked at me with eyes asking for an explanation of what the "internet" was. Uh... the World Wide Web? How was I supposed to explain that? I waved my hands in the air, gave up, and just lay back. *Sigh.* Forget it. It’d be better if I just taught her as we went along.
"I’ll just teach you little by little."
But where would she stay? Do demons eat? I was so full of questions that I fell silent, and Yerim wrapped her arms around my waist and hugged me tight. I could feel the soft texture of her thighs against me. I felt like I was going to get hard again any second.
Yerim must have noticed, because she brought her hand down between my legs, gently stroking my scrotum, and whispered in my ear, "Actually, this is my first time seeing a human, and my first time coming to the human world. I was so worried when I jumped into the Gate."
What was there to worry about?
"I was worried about witch hunters setting traps, or getting caught by the Cathedral Knights. My grandmother told me stories her grandmother told her, and she scared me so much. She told me to be careful if I ever went to the human world."
No, just how many years ago was that? Witch hunts? Cathedral Knights?
"But my sister kept telling me that if I saw a Gate, I had to jump through it no matter what. She said it was the only way for low-level demons like us to change our fate. She said anywhere was better than the Demon Realm."
Yerim lowered her head to my chest and slowly licked my nipple with her tongue. It was ticklish, but it felt good. Meanwhile, her hand gripped my shaft and moved it up and down slightly. After perfectly priming my member, Yerim lay back on the bed and spread her legs into an M-shape. Her snow-white, long legs created a sharp contrast against her black sleeveless turtleneck sweater, and her pristine, light-pink pussy—which looked as if it had never been touched by a human hand—added the perfect finishing touch.
"I’m so glad I met someone kind."
She gave me a seductive smile and slowly spread her wet pussy with her fingers. I noticed the manicured nail art on her fingertips as she pulled the folds apart.
"I used up almost all the demonic energy I’d saved up while crossing into the human world. One round of sex won't be nearly enough. You’ve still got plenty stored up, right, Oppa?"
I moved my body between her legs, as if possessed. Yerim swallowed hard when she saw what was between my legs. Honestly, even I found it intimidating. I’d tried to wrap my middle finger and thumb around it earlier, but my fingers weren't even close to meeting. A golf ball could be held between my thumb and middle finger, but this... this was as long and thick as a thermos.
Yerim reached out with her slender fingers and gently wrapped them around my member. Even with one hand at the base and the other in the middle, the glans still bulged out—that’s how monstrous the size was. With trembling hands, Yerim brought the tip of my glans to the entrance of her pussy. The moisture from her wet pussy transferred to the dry tip of my member. Like oiling a screw to make it easier to drive in, she sucked my cock into her pussy, then slowly pulled it back out.
Even though only the glans was inserted, Yerim’s thighs trembled violently.
"Wait... this is my first time doing it with this magic active..."
Damn it, Yerim, who had been so relaxed and responsive until just a moment ago, was acting so timid. Excitement flared in my brain like someone had poured gasoline on a fire. I roughly shoved her hands away from my cock and slammed it deep inside, almost to the root, in one go.
As I drove the pillar of fire into her, Yerim bit her lip hard enough to make a sound and twisted her waist. It wasn't pleasure; it was pain.
"Ah, it hurts! Kangmin Oppa, please, just a little slower!"
Tears welled up in Yerim’s eyes. Her mascara smudged slightly, and black liquid trickled down under her eyes. Seeing her makeup ruined like that triggered a sadistic urge in me. Damn it, this was twice as thrilling as when she was just getting off on her own. Blood rushed to my extremities in an instant. Feeling my cock grow even thicker, Yerim’s pussy clamped down tight. It felt like I was shoving my member into an *onahole* three sizes too small—it was wet, and it was painfully tight.
"I can adjust the width to an extent... but it feels much better for you if it's tight, right? It hurts, but... I’ll try to endure it."
Hearing that, my lower half was on the verge of exploding. I pulled my waist back. Even though it felt like I’d pulled back much further than before, half of my cock was still inside her. I pulled back a bit more until the glans was barely hanging on at the entrance of her pussy. It was like a snake slithering out! I marveled at my own member and thrust it deep inside once more.
"Hiiiiiiiii—!"
Yerim’s near-scream echoed through the room. Her hands, which had been holding my back, curled into claws, and her nails dug into my skin. *Ouch!* I leaned down and whispered in her ear.
"Yerim, don't use your nails. Interlock your fingers."
"Y-yes, Oppa. I’m sorry..."
She apologized in a submissive, wet voice. As she apologized, she wrapped her legs around my waist, lifted her turtleneck sweater to expose her belly, and pressed it against mine. The friction of our skin intensified the pleasure. As if to punish the hands that had scratched my back, she locked her fingers tightly behind me. Then, looking up at me, she pleaded.
"Oppa... please, thrust as much as you want... please, just ruin me."