Chapter 42: Caught Masturbating to My Girlfriend's Drawings... By My Girlfriend
"Chae-ah, want some coffee?"
"I don't drink coffee, so juice for me!"
"Got it."
After finishing her bath, Chae-ah plopped right down at my desk and got to work.
"Here."
"Thanks, unni."
"Work hard, but don't push yourself too much."
"Yesss."
While Chae-ah kept at it, I sat on the bed, scrolling through my phone to kill time.
I was checking out the latest products.
Every now and then, I'd glance at Chae-ah's back as she worked diligently.
The cutesy aegyo she always did at the store or around me was nowhere to be seen.
The girl I was watching now was utterly focused on her work, giving it her all.
"Hmm... that's not quite the vibe."
Watching her act out the poses made me chuckle softly.
Normally she'd react to even that little laugh, but right now she was too immersed to even glance over.
Suddenly, I got curious about all the artwork she'd built up so far.
To check it out, I downloaded Tweet for the first time and signed up.
Then I hit a wall.
I had no idea what Chae-ah's Tweet handle was, so I couldn't find her stuff.
On a hunch, I searched her Insta username—and boom, an account with the same handle popped up.
"Is this it?"
I tapped it, and sure enough, there were a bunch of posts in the same art style I'd glimpsed over her shoulder.
Seemed like Chae-ah's account, so I started scrolling through her past works one by one.
Just like she'd told me before, everything she drew was yuri.
"Pfft!"
I knew I shouldn't laugh out loud, but that casual chit-chat post cracked me up.
Seeing Chae-ah's tweets like that brought back my own past so vividly.
I used to cheer and welcome anything girl-related, just like her now.
"Oh my..."
As I kept browsing her Tweet account, I stumbled on a super intriguing post.
She'd retweeted something about fingering—whether to use index and middle fingers, or middle and ring.
The reactions were hilarious.
"Pfft!"
That short reply said it all so vividly.
"Huh? Unni, why do you keep laughing? Something funny?"
Chae-ah noticed me cracking up at her posts and came over, curious.
"I was looking at your Tweet."
"Huh...? Ohhh! Why are you checking that out! And how'd you even find it? I never told you!"
"Same handle as your Insta?"
"Oh... yeah, that's how you figured it out..."
"Anyway, what's this?"
I showed her the fingering retweet and the reactions.
"Huh? Oh, honestly, middle+ring feels more legit than index+middle, right?"
She hopped onto the bed naturally, leaning on my shoulder as we chatted.
"You do middle+ring too, unni."
"Yeah, it's the best. Index and pinky can support from below."
"Index+middle... might be better for pressing the walls?"
She pressed her middle and ring fingers together against an imaginary wall, flicking lightly, then switched to index and middle to do the same.
"Nah? Even when I masturbate, middle+ring feels iffy."
"Wanna show me next time?"
I whispered softly in her ear, and she blushed, nodding shyly.
"Hehe... y-yeah... gotta try it for real~"
"Back to work now."
"Yesss. Oh, right—what're we doing for my birthday?"
Her birthday was coming up soon, so she was asking about plans.
"Gotta party. We'll take the day off."
"For real?"
"Yeah, it's your birthday. Party, presents, and punishment."
"Punishment... hmm, what could it be."
"You'll find out on your birthday."
"What about candle play, unni?"
"If you want me to do it to you right now, I'll do it then. But you don't get to do it to me."
I figured she knew why without me explaining.
"Ugh... yeah, I get it..."
Wax play had way higher injury risk than yesterday's anal stuff.
With her personality, getting too excited and losing control—that was a no-go.
I didn't want to end up in the ER from sex gone wrong.
"Back to work."
"Yeah. You can keep browsing, I guess?"
"Kinda embarrassing..."
"I won't laugh."
"Mmm, okay~"
I slowly scrolled through more of Chae-ah's Tweet.
Then I spotted a post labeled "doodle" with an attached drawing.
One character had blonde hair like Chae-ah, the other black hair like me.
Even the long hair and medium cut matched us perfectly.
The blonde was fingering the black-haired one, who had a totally wrecked expression, squirting everywhere.
Chae-ah's skill was thumb-up levels of good, so it was insanely hot.
"Gulp..."
I swallowed hard and slipped my left hand between my legs.
Squeezing my inner thighs gave indirect stimulation to my pussy, and pressing added direct pressure.
And that wasn't the only combo like that.
Scissoring angles, black-hair dominating and pinning blonde down, forcing her head into the pussy to slurp up juices—tons of variety.
"Haa...♡"
*Squish...*
Curiosity about Chae-ah's reactions had left me half-finished in the bathroom earlier, and now it fueled my body's response.
Before I knew it, my hand was inside my pants and panties, rubbing my pussy slit as I started masturbating.
*Squish... squish...*
I couldn't let Chae-ah catch me, so no fingering—just rubbing my clit and slit.
It was teasingly insufficient, so I sped up my fingers.
*Squissssh squish squish squish!*
Soon I was just endlessly scrolling her hentai art, projecting us onto the characters.

"Hngh...♡"
I knew I shouldn't do this with Chae-ah right there in the room.
But the unfinished bathroom session was hitting me hard—I couldn't stay still.
Masturbating to my girlfriend's drawings while she sat right in front of me.
The forbidden thrill kept building, exciting me more.
"Haa... hngh...♡ huuung...♡"
As I flipped through more, I saw the blonde in a bunny girl cosplay.
Obviously Chae-ah, bound and getting fucked by me in my imagination.
[Hyaaang♥ U-unni...♡ F-fingers feel so good...♡ Your index and... ring fingers are so long... hiiigik♥]
Suddenly, Chae-ah's voice echoed in my head as a hallucination.
"Ch-Chae-ah...♡ hnggg...♡"
The moment her name slipped out,
"Why'd you call me, unni?"
"Waaah!"
Chae-ah was right in front of me, staring intently.
"Ch-Chae-ah...?"
"What was my unni up to~?"
A smile played on her lips.
But it wasn't her usual smile.
It was sly, wicked—like she'd caught me red-handed.
"Uh, I... just had an itch, so I scratched."
"Really~?"
"Y-yeah..."
"While looking at my hentai art?"
While I stammered excuses, she'd already clocked what was on my phone.
"Th-this... I was just admiring how pretty your drawings are."
I frantically locked the screen, but my hand was still stuffed in my panties.
"Then take your hand out."
"Uh, y-yeah...?"
Pulling it out now meant no excuse left.
Hiding it behind my back would look suspicious too, same if I left it in.
"Unni, your ears are beet red right now, you know?"
"My ears...?"
"Yeah, super red. Haven't even been that red during sex with me."
"I mean..."
As I hesitated on what to do, Chae-ah grabbed my wrist and yanked my hand out of my pants.
"W-wait... Chae-ah...!"
"Oh my... you said you just scratched, so why are your fingers all wet?"
"Th-that's sweat..."
"Bullshit."
She gave a bored sigh at my desperate excuses.
"How's that sweat? It's your pussy juice."
"N-no, it's not..."
*Slurp...♡*
"Chae-ah...?!"
I tried to hide it behind my back, but she shoved both fingers in her mouth and sucked.
*Sluuuurp...♡ That's sweat? Tastes exactly like pussy juice."
"I mean... that's..."
"While your girlfriend was working hard, unni was over here masturbating?"
"Ugh..."
"To drawings I made?"
I bit my lip and hung my head.
Couldn't even look her in the face.
"What'd you say when you went to wash up?"
"Huh...?"
"I said I'd do a bit more work, but you still stopped."
"Y-yeah..."
"So what's this? Huh? Is this why you left it half-done?"
Chae-ah stood tall, arms crossed, looking down at me.
Her eyes were thick with contempt.

"S-sorry..."
"Jeez. Kinda flattering that my art turns you on that much, but it feels like I lost to my own drawings."
"That's not it..."
"Bet you went full squirt mode thinking I wouldn't notice."
"N-no... kinda..."
"Like hell."
Just as I wondered if I should kneel and beg forgiveness, Chae-ah spoke again.
"I deserve whatever punishment you give me, obviously."
"Huh...?"
"But you're getting punished too. Right now."
Punishment.
What the hell was she thinking?