27-163

EP.163. Do for Me What You Did for My Sister 

"Whew, now I’m finally satisfied." 

Twitch, twitch, twitch. 

“Hngh?!” 

I only stopped pounding Seohee’s ass after cumming inside her three times. 

By then, Seohee had been brought to the brink over and over, fainting and climaxing repeatedly, so her mind was nearly gone. Her usually expressionless face was now smeared with drool and tears, her mouth hanging open, tongue out, eyes half-rolled back. 

“I’m going to pull out now. If you let any cum leak out, I’ll fuck you until you die today.” 

“Y-yes…” 

Seohee answered weakly. As I slowly pulled my cock out of her ass, she twitched, still feeling it. 

Pop  

“Hngh.” 

Finally, my cock slipped out of her ass with a clear sound, and Seohee immediately clenched to keep it closed. 

“O-Oppa…” 

Exhausted, Seohee slumped onto the toilet, barely able to catch her breath. 

She kept tensing her ass to keep the cum in, unable to relax. 

“Do you need more material?” 

“It’s… enough.” 

The original purpose was research for her molester story, not just to violate her. 

That’s why we’d tried to act it out, and Seohee nodded in satisfaction, happy with what she’d learned. 

Even if the purpose changed midway, Seohee got the experience and information she wanted, so she seemed pleased. 

“Now… let’s go to a motel.” 

“Still more to do?” 

“Yeah… this one’s personal.” 

I thought we’d go straight home, but Seohee wanted to go to a motel. I agreed and helped her up her legs were so weak she could barely stand. 

“We’ll clean up there.” 

The bathroom stall we left behind was a disaster, covered in Seohee’s juices. 

The toilet, floor, walls, and even the door were splattered with her scent, so strong it was dizzying. 

She’d peed on the floor, not in the toilet, and the cum I’d shot in her pussy had dripped onto the floor as well. 

I felt bad for the cleaner who’d have to deal with it, but I just took Seohee and left. 

Five minutes after we left, in the bathroom: 

“I gotta take a dump.” 

“Hurry up.” 

“Whoa, what the…?” 

Two male students came in, opened the stall, and froze at the sight. 

The new, usually clean bathroom was now filled with unfamiliar smells urine, and something else they couldn’t identify. 

“Dude, is that… semen?” 

“Whoa, it is… so someone actually did it in here…” 

Seeing the cum on the floor and smelling the musk, they realized someone had just had sex there. 

“Is this for real? Damn…” 

“It can’t have been long ago…” 

Feeling the lingering heat in the stall, the two boys were overwhelmed. 

“Let’s get out of here.” 

“Yeah, let’s go.” 

Feeling like they’d lose their minds if they stayed, they hurried out. 

The memory was so strong, they canceled their plans and went home. 

After that, they stopped by that bathroom every day, but never again saw a couple having sex there. 

“Is this the right place?” 

“Yeah… it is.” 

We entered the motel Seohee had reserved, and headed straight for the bathroom. 

“Whew, I felt gross, but now I feel better.” 

“I even brought clothes.” 

Seohee had prepared everything, booking a motel near the public bathroom so we wouldn’t be seen by others. 

“Thanks for today… Oppa.” 

“If Seohee asks, of course I’ll do it.” 

We soaked in the tub together, recovering from our exhaustion. 

“And… I have one more request.” 

“What is it?” 

“Do for me what you did for my sister.” 

“That?” 

I’d half-expected it, but still hesitated. 

“I’m ready.” 

What she meant was the enema training with white liquid that had been so hard even for Dohee, who almost lost control on the street. 

‘I knew Seohee was more interested in anal, but this might be too much for her…’ 

With Dohee, it was possible because she had some athletic strength. 

If Seohee tried the same, she might not be able to hold it. 

If we went outside, she could end up expelling the white lump in the middle of the street. 

“Please… Oppa.” 

But Seohee’s eyes sparkled with determination, saying she could handle it. 

“Okay, but if you really can’t hold it, tell me.” 

“Yeah… thank you, Oppa.” 

She smiled a small, lewd smile, grateful for the ordeal she was about to endure. 

After the bath, Seohee happily brought out the tools she’d prepared: the same white liquid and syringe used to fill Dohee’s ass, and panties with an anal plug. 

“Oppa.” 

“Turn around and stick your ass out.” 

“Yes.” 

She eagerly climbed onto the bed, squatted, and stuck her ass out. 

“Spread it.” 

“Yes… hngh…” 

Following my order, she spread her ass, and a little cum leaked out. 

She tried to clench as tightly as possible, but her anticipation made it hard to keep closed. 

“I’m putting it in.” 

“Hnnngh?!” 

As Seohee wished, I pressed the syringe to her ass and injected the white liquid. Her body trembled with both pain and pleasure, but she kept her hands on her cheeks, not letting go just like her sister. 

“Keep spreading. If you let any leak, I’ll put in more.” 

“Y-yes, Master.” 

Hearing my commanding tone, Seohee immediately changed how she addressed me, recognizing me as her superior. 

I filled her with another syringe of white liquid, her legs shaking. 

“Hngh… haah…” 

Her belly now full, Seohee was both suffering and dripping with pleasure. 

I filled her as much as I had Dohee, and she just trembled in place, unable to move. 

“This is… amazing.” 

She’d done enemas before, but never this much. 

“This isn’t enough, so let’s use this.” 

“Oh?! M-Master…” 

Instead of the anal plug she’d prepared, I shoved in a dildo as thick as my cock, leaving it half in and sticking out. 

With the dildo in, I put her panties on to keep it from slipping out. 

“Put this on.” 

“Yes… Master.” 

I handed her a white dress, and with trembling hands she put it on, looking almost normal from the outside. 

“Good, we’re going home like this. If you can’t hold it, tell me.” 

“Okay… and… do it like you did for my sister.” 

“You really…” 

I’d tried to go easy on her, but she wanted the full experience. 

“If you mess yourself on the way, you’ll be my public cum toilet from now on, you sow.” 

She flinched. 

“Hngh… yes, Master.” 

Hearing me act like the master she wanted, Seohee’s blank face showed a small smile. 

She knew how hard this would be, but she wanted it, and looked truly happy. 

“We’ll take the subway on the way… I’ll do even more than before.” 

“Thank you, Master.” 

Treated like nothing but a female beast, Seohee felt both pain and pleasure from her stuffed belly. 

“Already got your nipples hard, you sow?” 

Squeeze. 

“Hii?! My nipples…!” 

I pinched her nipples through her dress, making her climax and squirt immediately. 

“If you mess yourself on the way, don’t clean up. Walk home reeking of your female scent.” 

“Yes, Master.” 

She agreed right away, not even touching the juices running down her thighs and calves, just following me out of the motel. 

As we left, Seohee got excited by the stares she received, leaking nonstop as she walked. 

With every step, the dildo inside her ass wobbled and stimulated her. 

Since the white gel was still liquid, if she lost control, it could be a disaster. 

The dildo would help keep it in, but anything could happen, so Seohee walked with a mix of extreme tension and excitement, feeling pleasure from the pressure and the attention.