The Junior Who Knows Everything
A photo that looked like it had been taken in front of a sink.
With her pussy fully exposed and her legs spread just enough to tease, it was incredibly arousing.
I glanced around to make sure no one was watching before typing into the chat.
When I pretended to be angry as a little joke, Mochi immediately wilted. I didn’t know much about her besides the fact that she was a junior a year younger than me, but her reactions were always adorable.
I glanced over at Cha Seoyeon, worried she might approach again. Fortunately she was deep in conversation with her friends, so it didn’t look like she would come over.
What should I make Mochi do since it’s been so long?
It had been nearly two weeks since she last logged in. Members came and went as they pleased anyway; I had no real say in the matter. Still, the sense of conquest I felt when they obeyed my yano commands was undeniable.
“Sen-senior. Are you okay?”
“Huh? Y-yeah, I’m fine!”
I had been smiling without realizing it while thinking about commanding Taeyeon to perform yano. She looked at me with concern, but I quickly hid my phone and brushed it off.
That was close…
If she had quietly come up behind me and seen the screen, the Yano Gallery would have been exposed. I really needed to be more careful when using it on campus.
“Everyone, please take your seats. Also, a quick notice—if you score below the cutoff on this midterm, you’ll receive an F. Keep that in mind.”
“Aaaaa…”
The students let out a collective groan at the professor’s surprise announcement.
Yeah, I’m screwed.
I had only planned to scrape by with decent grades… Getting an F would mean retaking the course no matter who I was.
“Sen-senior, you don’t look so good. Are you all right?”
“Yeah… Looks like I’ll actually have to study for once.”
“I-I see…”
I had already taken on a website commission. On top of that, I needed to give Mochi yano commands. Now studying had been added to the pile. Everything I had to do had come crashing down at once.
“Th-then, would you like to study together today?”
“You don’t even have a test this time.”
“I still have finals, so I thought I could study while helping you, senior.”
“Really? Thanks, Taeyeon.”
“N-no, it’s nothing.”
It wasn’t a great look for a senior to receive study help from a junior, but what choice did I have? Retaking the class was the one thing I had to avoid.
And from behind us, Cha Seoyeon was watching the scene with clear displeasure.
After the lecture ended, Taeyeon and I headed to the library to study. Even though there was still time before the exam, the place was packed with students.
I still have to go home and work on that website… Today’s study session is doomed.
In the worst case I might not sleep for days. I let out a quiet sigh and claimed a seat. Most of the other floors were already full, so we headed to the fifth floor—the one with the fewest people—and settled down.
“I’ll handle units one through three.”
“I-I’ll take units four and five.”
Thanks to Taeyeon, my test prep time would be cut down considerably. We began studying in the quiet atmosphere. About thirty minutes later, a message arrived from the gallery.
Mochi!!
“Haah♥… Haah♥… Haah♥…”
“Are you feeling sick?”
“Hik?!♥ Y-yes?”
“Your face is pretty red. If you’re not well, you don’t have to push yourself.”
“N-no! It’s not that… I’m j-just a little hot♥”
Taeyeon’s face had flushed, so I grew worried, but she didn’t seem actually ill. I felt guilty that she was doing extra work she didn’t need to because of me.
“When we finish, I’ll buy you dinner.”
“N-no, it’s fine.”
“No, you’re helping me like this. The least I can do as your senior is treat you to a meal.”
“Th-thank you.”
Her face stayed red, but she really didn’t seem sick. Her breathing was a little ragged too… She would be okay, right?
About five minutes later I sent Mochi another message.
Even with her senior sitting right in front of her, she was still masturbating. Doing it in a quiet library full of other people. Most would hesitate, but Mochi seemed to be acting boldly.
- H-here it is♥

A few minutes later, a video arrived from Mochi.
Krgh!! If I were at home I’d be jerking off immediately!!
I wasn’t crazy enough to masturbate in the library. Still, the moment I saw the video, the urge surged through me. Under the table she was quietly plunging her fingers into her pussy. Obscene juices trickled down in a lewd display. Just watching it made my blood run hot.
I couldn’t hear any moans—she was probably holding them back—but I already knew the sound of Mochi’s voice by heart.
It plays on automatic in my head now.
“Haah♥… Haah♥… Haah♥…”
“Still hot?”
“J-just a little♥”
I didn’t feel particularly warm, but Taeyeon looked like she was burning up. She was even starting to sweat; continuing to study seemed impossible.
“Let’s finish the rest tomorrow and grab dinner now.”
“Ah, yes! Um… y-you go down first. I’ll just tidy up here and follow.”
“Then I’ll wait—”
“It’s fine!”
“Uh, yeah…”
She had spoken so loudly that other students turned to look. She was usually passive and introverted, rarely raising her voice… It was surprising, but I figured she had her reasons and headed down to the first floor ahead of her.
“See you tomorrow, then.”
“S-see you tomorrow, senior.”
After finishing the dinner Senior Gihyeon had bought me, I returned to my room. We lived in the same building—right next door to each other. Once I saw him go inside, I slipped into my own room.
“Haaauuuu♥ I-I didn’t get caught today either♥”
The moment I stepped inside, relief washed over me and my legs turned to jelly. At the same time, a wave of disappointment and thrilling excitement surged through me.
“Senior… still didn’t notice anything today♥”
Wearing a lewd smile I had never once shown him, I stared at the wall. The wall that separated me from the room where senior lived. If I made even a little noise, he would hear it immediately.
“Haah♥… Haah♥… Senior… Master♥”
What would he do if he knew who I really was? If I texted him right now saying “I’m Mochi,” would he come running?
“I-I’d get fucked by senior right then and there♥ Caught by my weakness and treated like a yano sow for the rest of my life♥ Uuuuhng♥”
Just imagining it sent goosebumps racing across my entire body. But senior was oblivious, so he never caught on. Today alone I had dropped several hints that could have given me away.
When I took the yano photo in the bathroom, I had deliberately let the clothes I was wearing show just a little. Even while masturbating in the library, senior could have noticed. Yet he noticed nothing at all.
“Worried senior is nice too♥ Haah♥… Uuuuhng♥”
The Yano Gallery that senior ran. I had joined it about three months ago. Because of my passive personality, I thought I wouldn’t make any friends in college. While looking for a way to change myself, I discovered the gallery.
At first I had no idea senior was the one operating it. I hadn’t even known he existed in the beginning. I simply followed Master’s yano commands and, little by little, awakened to a brand-new world.
“T-this is fate♥”
I learned that senior was Master during the freshman welcome party. When I couldn’t manage proper conversations with my classmates, he had quietly looked after me from the side. While I was feeling relieved by his kindness, I happened to glance at his phone. That was when I found out.
The fact that senior was the Master of the Yano Gallery.
And at that moment I felt it.
“Haah♥… Haah♥… M-Master♥ Master♥”
Squish, squish, squish, squish.
I masturbated while thinking of the senior who lived just beyond the wall. My pussy had been soaking wet since the library. From the moment I sat across from him, I had been losing my mind with the need to touch myself.
“He, hehehe♥ If I really get caught later♥… Uuuuhng♥♥”
A shiver ran down my spine. I masturbated while fantasizing about being discovered by him. And they say wishes come true…