The Childhood Friend Sees the Truth
With earphones plugged in, she played one of the videos from the USB.
"Is this thing recording? Ah, good♥ Can you see me okay♥?"
As the video started, none other than Boyeon appeared on screen.
"Is, is this for real?"
When she'd heard that Taesu had a friends-with-benefits thing going with Boyeon and Senior Eunji, Soyoung had been shocked—but honestly, she hadn't quite believed it. She'd wondered if it was just an excuse to push her away. But now, seeing Boyeon right there in the video, a bubbling anxiety welled up inside her.
"Then I'll start masturbating with senior's permission♥"
"What!?"
And then the shocking words burst from Boyeon's mouth. In the video, she seemed to be filming at her own place, dressed casually at first, but she quickly started stripping off her clothes.
Gulp...
Soyoung felt guilty for secretly watching this, but it was clear that filming and sending something like this to Taesu wasn't the act of ordinary friends.
"Just thinking about senior watching this later gets me so excited♥"
Boyeon was fully naked now. Her massive breasts and pink nipples filled the screen.
'H-Her tits are definitely a bit bigger than mine, and her figure... ughhh...'
Jealousy flared in Soyoung at the sight of those larger, prettier breasts. She thought her own body and looks were nothing to sneeze at, but Boyeon's chest made her feel a little deflated.
"Here's the pussy senior turned into a slut♥"
"Sh-She's even filming that!?"
The view zoomed in close on her phone as Boyeon spread her pussy wide, showing every glistening inch inside. Already slick with arousal, it sparkled lewdly, turning Soyoung's face beet red. The idea that this was actually on the USB made her head spin even more.
'Is it okay to watch this without telling Boyeon?!'
Privacy invasion, personal info leaks... what if this caused problems later? But she couldn't tear her eyes away.
"Now, enjoy the vulgar milk cow's masturbation show♥"
With a slutty grin, Boyeon lay back on the bed like it was routine, spreading her legs wide for the camera.
"Th-That's going in!?"
She picked up a massive dildo she'd prepared in advance and rubbed it against her pussy, getting ready to start. It was so thick and long, Soyoung wondered if it could even fit—but Boyeon handled it with ease.
"I'll masturbate with a dildo smaller than senior's dick, so it can grip senior's dick nice and tight♥"
"What? T-Taesu's is bigger than that? Th-Then how huge is it... gulp♥"
Soyoung's face burned as she imagined it; even that dildo looked plenty big.
Squelch
"Hnnnghh♥♥"
In the meantime, Boyeon had started, sliding the huge dildo in and out of her pussy.
"Ahh♥ Ah♥ Ahh♥ It's been so long since I masturbated—feels so good♥ Ahh♥ Ungh♥"
Watching Boyeon moan lewdly as she pleasured herself, Soyoung felt her own body heating up.
'N-No, I shouldn't♥ J-Just a little, then...♥'
Feeling guilty toward Boyeon, she slowly slipped a hand between her legs and began stroking her pussy over her panties.
"Haht♥ Ungh♥ Not letting me masturbate for three days was way too mean♥ Ahp♥ Ungh♥"
"She really needs Taesu's permission just to masturbate... ♥... Haa♥"
If even masturbation required his approval, this was far from a normal fuck-buddies setup. It was more like...
"A slave♥"
Boyeon seemed just like a slave trained by her master. Those words started painting a clear picture of her relationship with Taesu.
Squelch squelch squelch squelch
"Laugh at your milk cow cumming from a dildo instead of senior's dick♥ Moooo♥ Spiiiish"
Boyeon climaxed hard, squirting pussy juice everywhere, her hips bucking wildly.
"Feels good♥ But it's nowhere near as good as senior's dick♥"
She filmed her cum-soaked, sloppy pussy up close as she spoke.
"Tomorrow at school, please pound my pussy raw with senior's dick♥ My milk cow pussy's always ready and waiting—look forward to it♥"
With that, the video ended.
"Haa♥... Haa♥... Haa♥..."
She'd only watched one, but it was way lewder than imagined, leaving Soyoung's body burning hotter. As if entranced, she started browsing Boyeon's photos.
"Even pics like this... W-Wait, this spot..."
One photo caught her eye—a familiar location amid the naughty shots.
"The school bathroom..."

It was Boyeon in the school bathroom, naked on the toilet with her legs spread wide, making a V-sign with both hands.
"D-Different one!"
Seeing that Boyeon had taken even this for Taesu made Soyoung's face flush crimson as she clicked to another photo. The shock of her cheeky, playful junior snapping such slutty pics only muddled her head more. Then she opened another file—it looked like Senior Eunji's.
"No way Senior Eunji sent stuff like this too... N-No, she wouldn't."
In Soyoung's mind, Senior Eunji was the epitome of cool and chic. Calm and composed unlike herself, tall with a killer body and looks—someone she admired. The idea of her having a fuck-buddies thing with Taesu just didn't compute.
'She used to hate Taesu...'
Or rather, avoid him. Soyoung rarely saw them together; it even felt like Eunji went out of her way to dodge him, as if she didn't like him. She'd even thought about helping them get closer, but never imagined this.
They'd seemed a bit friendlier lately, but Soyoung never dreamed it'd go this far. Senior Eunji has to be different from Boyeon, she thought, and played a video.
It opened on Senior Eunji in her swimsuit. She glanced around, checking that no one was there. The setting looked like the swim team's locker room.
"Th-Then I'll start filming the video for Master now♥"
The words from her mouth hit like a bombshell beyond imagination.
'M-Master?! No way, Taesu!?'
From the context, she was clearly addressing Taesu. Soyoung couldn't believe the word "Master" from her cool senior's lips—had she misheard?
"Please watch this bitch's scent masturbation with the panties Master gave her♥"
Her face flushed with shame, but she acted with practiced ease, like it wasn't her first time. Masturbating in the swim team locker room, where anyone could walk in? It was insane. Soyoung's image of her senior shattered completely.
"Haa♥... Haa♥......"
She set Taesu's panties beside her and pulled her swimsuit crotch aside, exposing her pussy. It was already damp—water or arousal juice, who could tell?—as she spread it open and pressed the panties to her face.
"Sniiiiff♥ Hnnngghhh♥♥"
"Th-The scent..."
Senior Eunji inhaled deeply from the panties pressed to her face. Her eyes rolled back halfway, body shuddering—she was utterly lost in bitch-in-heat ecstasy.
"Master's scent♥ S-So good♥ Sniiiiff♥"
Just from the panties' smell, she trembled all over. The cautious glances from moments ago were gone; now she was a bitch in heat, sniffing away.
"Cumming♥ Cumming♥ Cumming♥ Cumming♥ Spiiiish"
"Eh?.....Huh?"
Soyoung froze as her senior came from the scent alone, not even touching herself.
"Haa♥......Ooh♥ Th-Thank you for watching your bitch cum from Master's panties scent alone... Hngh♥... Th-Thank you♥...."
The video ended with those lewd words, leaving Soyoung too shocked to speak.
"I-Is this real!?"
Unable to believe her eyes, she scrolled through all of Senior Eunji's photos. Every one was slutty—some with reluctant grimaces, but none felt forced.
"Haa♥... Haa♥.... Hngh♥"
Squelch squelch squelch
The overwhelming lewdness of those two had her masturbating uncontrollably.
"I-I can't believe it! There's no proof this is real... it could be fake, edited!"
Denying reality, she finally understood why Taesu had pushed her away—but accepting it was hard. She called him right then.
"I don't believe it."
"What? The second you call, that's how you—"
"I'm not believing it until I see it with my own eyes—the stuff on the USB you gave me!"
"...Fine. It's basically just whining."
But Taesu responded calmly.
"I'll show you in person tomorrow. So just sleep tonight."
"Eh? F-For real?"
"Yeah. See you tomorrow."
He hung up after that.
"........Huh?"
She'd only said it hoping the videos were fake, but things veered in an unexpected direction. Dazed, she shut down the computer and slipped into bed.
"In person tomorrow?!..... Gulp♥"
His promise to show her the real thing made her heart pound wildly; it took until dawn to finally fall asleep.