That's the sound of masturbation...
That's the sound of masturbation...

"My body feels so heavy, so heavy."
As I dragged my feet trying to get up, a strange sound reached my ears.
"Chyu-ppyu... chureut... ha-eu."
What the hell is that sound?
I followed the sound.
The noise was leaking from a closed room that looked like Chaelin's room.
'Is it here...?'
Holding my breath in front of the door, I strained my ears to the sounds coming from inside.
"Ha-eut... u-eut, hat. Ah-eung."
What the fuck!?
A high-pitched moan leaked out ever so softly.
'W-What. That's Chaelin's voice.'
No way...?!
Screech- creak.
How intense was it for even the bed creaking sounds to be heard!?
Mixed in between, sounds like squelching and sloshing came like a rhythmic cadence.
......There was no way I couldn't know.
I'm an adult too.
Not that I was masturbating myself, of course.
I could at least tell what kind of situation this was.
So right now...
'Are they fucking!?'
My eyes rounded out to the size of saucers at the unbelievable reality.
"......Haha. Hup!"
I hurriedly clapped a hand over my mouth.
No way, it must be my delusions.
I misheard.
Coming over to someone else's house and soaking their underwear,
and now thinking that Chaelin invited me over and was doing... that stuff in her room.
I'm screwed.
My brain is completely rotted.
You shouldn't carelessly misunderstand people.
"U-eut...! Nahee eonni...."
That's my name!
The voice was far too clear to pretend I hadn't heard it.
It wasn't sex, it was masturbation.
"Eonni... haat, ah-euk."
No, stop calling my name!
My face flushed red with blazing heat.
It was my first time hearing someone else masturbate.

That sticky yet erotic voice...
'Does she still think I'm sleeping?'
To think she had this much sexual desire.
On top of that, I am... Chaelin's.
'Fapping material...?'
......Insane.
They say you can't judge a person just by their face.
I never imagined that behind such an innocent, Maltese-like face, she'd have a preference like this.......
'No! Stop thinking about it!'
I shook my head frantically to clear out the dirty thoughts.
Wait, that doesn't mean Chaelin is dirty, though.
I didn't hear a damn thing.
Yup, yup. Can't disturb someone else's precious time.
'Let's pretend to be sleeping again so it's not awkward for either of us.'
The moment I stood on tiptoe like a sneaky cat and tried to turn my body toward the sofa,
a chilling sensation brushed against the back of my neck.
"......."
It's freezing. This indescribable sense of incongruity.
It felt like I shouldn't move even a single step.
Slam.
"Eek!"
I jolted up in surprise as the bedroom door suddenly burst open.
"Eonni?"
A flushed face and slightly sweat-dampened, disheveled hair.
She really did it, she actually did it....
"Are you awake?"
A sultry wave of heat rushed out from the open doorway and enveloped my body.
I looked at Chaelin with a flustered expression.
What am I supposed to do in a situation like this?
First of all, let's act naturally.
"...Yeah. Just woke up."
"Really?"
"Probably...?"
I slightly averted my gaze.
"What's with that, eonni kept sleeping so I was going to wake you up, but......."
Chaelin smiled softly.
"You looked like you were sleeping so soundly, so I just left you be. You must have been very tired."
Ah... so she really thought I was fast asleep and did it.
I cleared my throat with a couple of loud coughs, "Ahem, ahem," and fanned the sultry heat away with my hand.
"Sorry for falling asleep after saying I'd help."
"It's fine."
Chaelin took a step closer to me.
"It was nice getting to see eonni's sleeping face anyway."
"R-Really? What's so great about seeing me sleep. You're not teasing me, are you...?"
Suddenly, the secretly taken photos from the broadcast flashed through my mind.
She didn't secretly take pictures of me again, did she?
But right now wasn't the time to pick a fight over that.
Chaelin's face was flushed to the brim.
Her breathing slightly ragged.
"Ah! Y-You said you were broadcasting?"
Looking toward the window, the outside had grown dim without me noticing.
"Is it too late? You haven't started yet, right?"
"Nope."
Chaelin shook her head.
"I can just start now."
"Then I should help you set up and head home."
It's suffocating.
Let's run away quickly.
Chaelin's brown eyes were unusually hard to meet today.
Is it only awkward for me?
My mouth was burning dry.
"You're just going to leave? I'm not even turning on the cam."
"......."
"Can't you just stay sitting next to me?"
From fapping material to being treated like a key-ring accessory.
Still, I felt guilty for saying I'd help only to sleep the whole time.
"Alright. I just need to stay next to you, right?"
"Yes! And it'd be even better if you introduced me too, if possible."
"Let's do that then."
Chaelin's face visibly brightened with color. Is she really that happy just having me by her side?
What was going through her mind when she called my name while masturbating?
Even though I didn't see it with my own eyes, judging by the circumstances, it was 100% masturbation.
"Eonni, you have a hair stuck in your mouth."
Huh...?
It happened in the blink of an eye.
Chaelin stepped in close and reached her hand toward my face.
Her white, slender fingers brushed against my lips.
And forced their way through the gap of my closed lips.
I stayed still out of sheer reflex to her natural movement.
The finger that invaded between my slightly parted lips boldly swept across my teeth. It even brushed against the tender mucous membrane on the inside of the lips, stirring around with a sticky sensation.
"......There's a hair."
Chaelin narrowed her brow in concentration.
"It's not coming out easily."
The finger that had entered between my teeth touched my tongue.
"There. Got it out."
I nodded with a blank expression.
"T-Thanks..."
Is this normally how things are? Do friends go this far for each other, seriouslyyy.
'No way in hell.'
Besides, I could taste a fishy flavor from that finger.
I'm pretty sure the tip of the finger that touched my tongue had felt all wrinkled up. On top of that, it even had a damp feel to it.
Could it be that the hand she used to masturbate was put into my mouth—....
What kind of absurd thought is this.
'At this rate, aren't I the one with a delusion disorder?'
What kind of thoughts am I having right now, doubting Chaelin who's been taking care of me? It's like I'm unfairly painting someone as weird just because I heard them masturbate.
I let out a deep sigh inwardly.
'Did Chronie do something to my body?'
I should go to the Association and get a mental evaluation or something.
Oblivious to my inner turmoil, Chaelin was just flashing a good-natured smile.
In the end, unable to say anything, I suffered inwardly all by myself until broadcast time arrived.
"Chaeha~! Hello!"
She didn't even turn on the cam, yet she's waving out of sheer habit.
Even that sight was so cute that it brought a warm smile to my face.
ㅡ Chaeha.
ㅡ Why are you so late today. You've gotten complacent.
ㅡ Explain yourself, explain, explain.
ㅡ Turn on the cam, cam, cam.
"Sorry everyone, I had some work today so I was late. Instead!"
Chaelin excitedly drummed on the table.
Ba-dum ba-dum ba-dum.
"Instead of turning on the cam! We have a special, amazing guest today! Eonni, please say hello to the viewers!"
"U-Um... Hello."
Chaelin covered her mouth and giggled softly at my awkward appearance.
ㅡ It's Nahee.
ㅡ Just hearing her voice, it's Nahee.
ㅡ Show us your face, show us your face, show us your face.
ㅡ Turn on the cam please.
ㅡ Is it true that Chaelin's voice is this bright.
The chat window exploded into motion in an instant.
"You have to say your name, eonni."
"Ah... I'm Hero Kim Nahee."
"Isn't our eonni cute? I'm such a successful fan. To think I get to see eonni this close."
Chaelin said, clasping both hands together with sparkling eyes.
"I really want to live together with eonni."
Why are you licking your lips with your tongue?
"Ahaha..."
Let's just laugh it off.
I was still in a dazed state from earlier's incident, and this sudden onslaught of affection left me unable to keep my wits about me.
ㅡ In your dreams.
ㅡ Nahee is public property.
ㅡ Why isn't Nahee broadcasting ㅠ Waiting for 700 days now.
"Shh! Don't pressure eonni. We're starting the game right away!"
Chaelin sat me down next to her and started playing a game.
It was a light puzzle game.
A game where you follow the story and find hidden clues.
However...
"Is this game bugged? I can't see any clues."
Chaelin said in a voice full of annoyance, worn out from searching.
ㅡIt's right in front of you.
ㅡ How can you not see it.
ㅡ (Died from frustration)
Watching her play sitting right next to me,
she was genuinely terrible at it.
It wasn't acting for the broadcast;
she was legitimately awful at it...
Her eyes wide open, her brows tightly knitted together, she was super-focused.
Every time Chaelin tilted her head, her high-tied ponytail swayed left and right.
The white neckline exposed beneath it caught my eye.
"Can you see the clues, eonni?"
Chaelin asked, leaning her body toward me.
A sweet scent brushed past the tip of my nose.
An Esper's pheromone scent? My breath grew short and my body heated up slightly. I hurriedly calmed my insides with Magical Power.
Even just a slight whiff of an Espers' pheromone scent would naturally arouse my body and make my chest feel suffocated.
"U-Um? Ah... I can see them..."
I almost gave a delayed response because her body scent made my head spin.
I managed to calm my nerves inwardly and focused on the broadcast.
Wait, she doesn't know this?
This is Easy Mode, so it practically hands it to you on a silver platter! You just have to read the text!
"Is it easier to see from that side? Just a sec."
Chaelin pressed her body tight against mine. The moment she leaned against me, the back of her head blocked my view and positioned itself right in front of my face.
Is this one of those signals?
Ah.
Think pure thoughts.
I'm sounding way more like a pervert here.
This is all because Scarlet keeps telling me to have sex with my guide!
A corner of my chest felt ticklish.
I just wiggled my toes.
"It's the same? Would you like to try it, eonni? I'll watch and learn."
"Me...?"
It's your broadcast, I only came to help because you said your arm hurt.
"Alright, let's switch seats."
"No. I'll just pass you the mouse, I'll find all the clues right next to you, eonni. Trust me! Hehehe."
She charmed me with a pretty eye-smile.
There's no refusing this.
"Alright. Here, look. You just need to read the text carefully and find it."
I can do that, but.......
Chaelin has her arms linked with mine, so I can't concentrate at all!
I have no idea what mental state I used to play the game,
but before I knew it, the game reached the part where we had to find and combine solutions.
"Here, you have to mix, um, ahem, combine the solutions? You have to find the hidden solutions and mix them with the solution in that beaker..."
I stuttered because of her chest pressing against my arm.
My cheeks grew hotter and hotter.
They got genuinely hot.
Why is she exhaling her breath right onto my cheek....
To add to that,
an arm casually draped over my thigh. Her hand had somehow slipped between my legs.
I couldn't even close my legs.
I bit down hard on my lips.
ㅡ Mouse stopped.
ㅡ What is Nahee doing?
ㅡ She was doing well, but looks like she's stuck. Peak human-like imperfection.
ㅡ She's still better than Chaelin.
Before I knew it, the mouse had stopped moving.
"Eonni, you don't know either? I don't know either, what should we do...? We have to finish it to the end."
Yeah, I don't know.
How am I supposed to concentrate when you keep twitching your fingers and all my attention goes straight there?!
I could totally reach the ending if you'd just take your hand away.
My lips were drying out fast.
A bead of cold sweat trickled down the back of my neck.
"Why is eonni's body so hot? Are you hot? Do you want to take it off? Should I give you my clothes?"
I can understand my face or forehead, but why are you touching my side-boob!
ㅡ Turn on the cam, cam, cam.
ㅡ Let me see too.
ㅡ Chaelin, share the good stuff.
"No, I'm not hot at all, I'm fine!"
Right then, my smartphone vibrated.
"Why do dispatch alarms pop up so often these days."
Keeping an eye on Chaelin, I turned on the screen.
[Villain Chronie]
The moment I saw that name, the heat that had flared up until just a moment ago froze solid in place.
My teeth ground together with a harsh crunch.
"I have to go. Wrap up the broadcast nicely."
".... Should I come with you?"
My injured arm caught my eye.
Even if it had been completely fine, I had no intention of bringing her along.
"You're a patient. Combat is out of the question. Just stay here and rest."
I sprang up from my seat.
Wait for me, Chronie.
I'm going to pay you back for last time.
