A/N: Actually I wrote this one shot since a long time ago. I just added the whole story into this collections since it is about Youngjae. Here goes the first chapter!! Hope you all like it and enjoy! ^_^

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You rang the bell and as soon as the front door was unlocked, you pushed through it and dashed into the house without greeting, knowing that he was the one to answer the door. You plopped your body onto the couch and took a big gulp of fresh air.

"Whew, that's tiring." you said and fanned yourself using your hand.

Youngjae shut the door and walked towards your way. He placed both his palms on his hips and looked at you.

"Yah! You're late." he said, a little annoyed.

"I know. That's why I ran all the way from my house to yours." you explained, not looking at him.

Your childhood bestie rolled his eyes and sat himself beside you.

"What happens to Daehyun? He should've offer you a ride." he asked as he poked your side.

You waved your hand at the mention of your blood related brother's name.

"Daehyun oppa was a jerk enough to leave me behind and he himself went to enjoy his blind date with Himchan oppa. His car was gone before I have the chance to ask for a ride." you complained and crossed your arms.

Youngjae frowned in disapproval. 

"Aish, that fool. What in the world is more important than to have his little sister pass junior year?" you pouted and agreed with him.

Youngjae smiled and wrapped his arm over your shoulders.

"No worries! Your brain bestie here is going to help you pass junior year. That is why Daehyun send you here for tutor in the first place. Because he wasn't smart enough like I do. I wonder how he the hell did he pass his junior year?" 

You turned to looked at him and made a face.

"Show off." you pushed his arm away from you.

"Yah!" he yelled.

"I'm going to tell Daehyun oppa that his bestfriend talks about him behind his back, and what's more, in front of his beloved sister." you smirked. 

Youngjae raised his eyebrow and pointed his finger at you. 

"You dare?" "Of course." you flipped your nose with your thumb. He couldn't help and started to chuckle.

"Stop laughing and let's start with the annoying tutor now!" you said. 

Youngjae stopped laughing and stood up as you followed his height in front of you.

"Yah! Watch your words. I'm way older than you." he said and flicked your forehead.

"Oww! You're only a year older." you said and rubbed your forehead.

"Still I'm older." he replied.

"Yeah yeah. Now can we start, Grandpa Yoo?" 

He narrowed his eyes and glared at you.

"Feel thankful that I'm your bestie if not, I'm going to smack you in the face." he said.

You stucked your tongue out at him. "Whatever." And with that, you left and headed to his room, get ready for the tutor.

Youngjae watched you walked towards the staircase and smiled secretly.

*How will I ever smack you like that? I love you so much...* he thought and followed you up the stairs.

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Inside Youngjae's bedroom, you were flipping through his comic book that he had personally collected. Youngjae entered the room and you turned around. 

"What are we going to learn today? Geometry? Or Cheosun History?" you asked as you settled back the comic book and sat down onto the floor. 

Youngjae smiled and sat down across from you. You blinked at him and waited for his reply.

"None of that." he said. You grew confused.

"We're learning English Language today." he reveiled as he took out sorts of Grammar and Vocabulary reference books. Your jaw dropped and stomach sank.

"Are you serious?" you asked, Youngjae blinked and tilted his head.

"Do I look like I'm joking?" 

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