I hastily ran towards the stairs, I couldn't believe I'll be late for my first chemistry experiment of this term. All I did was to went washroom at free period and when I came back to class Jinae told me batch one left already with Mrs. Baek.

"Mrs. Baek, may I come in?" I asked her as I stood in front of the entrance. My eyes fall on him, Jimin. He was standing against the desk while his hands were stuffed in his pockets.

I gulped, what was he doing here? This was suppose to be third year's class.

"Yes Yejin, come in. Why are you late?"

"Uh, Mr. Lee asked me—" I lied but she stopped in midway.

"Okay I got it. But Yejin you miss the explanation." Nothing new, I knew it.

"I've to go class, head mistress need my help but Jimin's here to supervise you." She announced to the class. Oh, so that's why Jimin was here. I looked at them, they all were already paired. My eyes fall on Sungo who was paired with some random guy, while Yoora was alone. She slyly winked at me, making me smile.

Yes! I'm gonna pair with Yoora.

"Okay. I'm leaving. Behave well." With this, Mrs. Bark left."

I walked towards Yoora, and she gave me high five. I looked at front, to Jimin. My eyes creased as I looked at him. Why he's looking like he hasn't slept for an eternity? Not only that, his cheeks were red and puffy while his hair were disheveled. He still looked handsome though.

"Oppa!" A girl, who was at first table squealed in excitement. I didn't know why she was excited.

This made Jimin flinch and he grabbed his head with one hand.

"Keep it down, why the fuck are screaming? My head hurts."

"Will you explain the experiment again?" She asked, this time normally.

There were tables, along with experiment apparatuses. One table had two students. I was at fourth table, Sungo was on fourth table too but on first row

"Then why the fuck you were using your useless mouth when teacher was barking?"

Oh, I must say he definitely sound hot when he's angry.

He snapped at the girl, making her quite. Why he was angry though?

"Oppa! But I didn't understood."

"Do I look like someone who can fix it?" He again scowled, he picked up a marker and wrote some chemical bonds on white board.

"Baby, go one last table." He spoke out loud while writing.

"Okay oppa." Few girl spoke, while I looked at them in confusion. Why they were been so persistent?

"Excuse me, I was talking with my girlfriend. Yejin, go at back." Okay, my heart skipped a beat when he said that but at same time I blushed hard in embarrassment as all those girls glared me.

"Yah, short chicken. Why are you sending her back? She is my pair already." Yoora spoke out making Jimin hiss.

"Yoora, don't be jealous just because your single. Let other people enjoy. Beside, Taehyung might be coming soon." Jimin spoke, making Sungo laugh. Oh, so that's why Jimin is doing this. He wanted Taehyung and Yoora to be paired together.

"I'm just behind Yoora." I spoke and went behind her. I kinda felt I just ditched my best friend, but she might get some time to spent with Taehyung. I pouted, I'm alone now.

"You see those book? These are your chemistry experiment book blah blah. Everyone pick one and get back on your seat." He announced as he picked up three books, he walked at towards me. He passed one to Sungo, put one at Yoora's a table.

"Now write that chemical equations in your book and start doing your experiment. If you have any problem don't ask for my help. And if somebody will turn around, I will kicked them out of laboratory." Jimin spoke as he came my table, put that book on my table and hug me from behind. My eyes widen, heartbeat ran wild as he rested his chin my shoulder; his hands wrapped around my waist.

"Yejin, are you both doing dirty in class?" Yoora asked without looking back.

"Shut up hot head." Jimin leisurely spoked, now his for head rested against my shoulder.

"N-No, we aren't Yoora."

"Come on baby, start working. Don't mind me." How could I focus when his while body is practically touching mine.

"But I don't know what do?"

"Lemme teach you." He stood beside me and opened my book.

"Look it's easy."

Yeah, everybody says that.

"Here we need to prove Phenolphthalein is a universal indicator. Phenolphthalein is colorless liquid, this one is phenolphthalein." He said while pointing at colorless liquid which was on flask.

"It changes color to show the pH of certain solutions. Phenolphthalein stays colorless in acidic solutions and turns pink in base solutions. Do you know what is acid and base, right." He asked me, and I nodded positively.

"Examples of acid."

"Uh, lactic acid? Citric acid?" I hesitantly answer, which he replied with smile.

"Example of base."

"Umm, baking soda? bleach?"

"Perfect baby. So as you can see this is Sodium Hydroxide. When you add Phenolphthalein it will turn?"

"Pink?"

"Yes. Experiment complete." He smiled.

"That's it?" I asked, it's easier than I thought.

"Yep, but you have to write steps in experiment book. Repeat what to do in experiment."

"Phenolphthalein is universal indicator, which is colorless. When it will be added in base like Sodium Hydroxide, it will change its color to pink."

"See, you even memorize an experiment which could be asked for eight mark." He smirked proudly.

"Oh,"

"Ain't I the best tutor ever?" He flexed while running his hand through his hair.

"Yes Jimin, thank you." I smiled, I don't know why his smile disappeared.

"You know you look beautiful when you smile genuinely." He whispered as he leaned in and captured my lips with his, kissing passionately. I closed my eyes and replied his kiss. I completely forgot about the fact we were in laboratory.

"Oh lovely couple, Yoora is starring you weirdly." Taehyung's deep voice spoke, and immediately pushed him away making him groan.

"No! I wasn't staring! Lair." Yoora yelled on Taehyung.

"Yoora, don't yell out loud. I'm having fucking migraines." Jimin whined, holding his head.

"Oh—"

"Now tell me, why I'm summoned here?" Taehyung asked.

"Nothing, pair up with Yoora. Poor soul is alone." Smile from Taehyung's face disappeared and exchanged with a deadly glare.

"No," he simply answered.

"I don't need any partner." Yoora replied.

Both of them are hardheaded.

"I didn't gave you choice. I'm in charge here."

"Fuck you," he walked towards Yoora and both of them stood beside each other.

"God, my head is literally aching." He rolled his eyes and again stood beside me.

"What happened? Are you sick?"

"No—"

"Hangover Yejin, you won't get it." Taehyung spoke as he turned around.

"You d-drank again?"

"We all went to club yesterday." Taehyung whispered.

"Oh, then how come only Jimin's like that?"

"What do mean like that?" Jimin asked.

"You seem you haven't sleep since a while."

"I did actually, but I remembered sleeping on bed but I woke up on cold floor. And on top I was late and huge hangover." Jimin explained.

"This was not the only thing, Taehyung dropped me at bungalow instead of apartment. It took me an hour to reach at school."

"Hey, I didn't knew where your ass was staying."

"Yeah, last thing I remembered you were so busy in making out with some random girl. You dropped me there because it was closer to club. You can't wait to fuck her don't you." Jimin sneered making Taehyung shrugged.

"We are fucking class! Both of you shut up. You're disturbing other students." Yoora spoke naming Taehyung and Jimin flinch. She was so angry, and irritated.

"Bro, she's so jealous." Jimin whispered in Taehyung ear, he pushed him away and turn around facing the ahead.

"Oh, what are you waiting. Complete it fast, after that we can kiss more."

"We are in class, under camera supervision."

"No we are not, last time Jungkook broke the camera."

"How—"

"He was playing catch with wall and suddenly the ball hit the camera. Since then there is no camera here."

"There are students here."

"I don't care."

"I care, you fan girls were giving me death glares when you called me baby."

"Ah, they are annoying." He groaned.

"By the way Jimin? Why didn't y'all went to practice?"

"Everyone's suffering from major hangover. So we skip practice today."

"Taehyung seems fine."

"That ass has high alcohol tolerance. Better then me."

"Oh, did you met girls at club?" I couldn't help but asked that question. Last time when he drank, it didn't end up well.

"Yes," suddenly I felt sad.

"Were they beautiful?"

"Eww, no she was a leech. She ruined my mood in the beginning." Oh, then good.

"You get jealous too." I stopped adding Phenolphthalein.

"I wasn't jealous." I lied.

"Stop lying." I ignored him and tilted the solution and soon it turned into pink, making me smile. I put it into holder immediately jolt in down in book.

"Done."

"Okay now kiss."

"No Jimin, we are in class."

"I won't be listening anything."

"Just one kiss."

"Okay, that will do." He closed his eyes and stood there. I hesitantly looked around to see if somebody was looking at us. My eyes fell on couple in front of me. Both Taehyung and Yoora were looking at me with evil grin plastered on their face.

Taehyung motioned me to go ahead while Yoora gave me thumbs up. Finally they both turned around. I grabbed Jimin face and leaned in, just to kiss his cute boop able nose.

"Yejin that's not fair." He whined making me laugh.

"You asked for kiss, I gave it to you." I smiled making him pout.

"Gosh, I feel so single." Both Yoora and Taehyung said at once. Both of them stop and looked at each other and then turns away.

"Baby," Jimin called me.

"Yes,"

"Wanna bring those two together?" He whispered, making my eyes wide.

"How?"

"I dunno, but you wanna."

"Of course." He smiled and brought his fist in front of me, I form fist and did a fist bump with him.

"We'll plan 'cupid's play' soon."

***
A/N

Again a filler? Sorry, I'm out of twist and turns. You better enjoy these fluffs.

I decided to name Taehyung and Yoora's book 'anti cupid's play'. If you have better name, according to third relationship then please comment.

Did you saw how well Jimin understood/tried to understand Yejin?

Amount of time Yejin smiled and laughed in this chapter :)

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(Jimin and Jungkook have almost same height)