"Yahh Kim Dahyun palli!!!" Jeongyeon shout as she take her helmet and rush to her bike. They are late to school again because of Dahyun.

Dahyun wear her shoes and run to Jeongyeon with a toast in . "I'm coming!!"

Jeongyeon just sigh with her sister antics. "I told you don't watch drama until late night."

"Mianhae unnie." Dahyun grin.

Jeongyeon shake her head, she start her bike and ride to school.

~

After school*

Jeongyeon look at her watch, it's almost one hour after her class end still, there's no sign of Dahyun. "Don't tell me that she sleep in her class again." Jeongyeon walk to Dahyun's class and yes Dahyun is sleeping. She sigh. "Why do I have a sister like you?" She thought.

"Unnie,annyeong"Dahyun grin, she rub her eyes then stretch her body. "Mianhae I fall asleep again."

Jeongyeon smile,she stand up."Okay let's go home. I've got homework to do." She said while she shaking Dahyun's body.

"But tomorrow is weekend." Dahyun whinned.

"Better do it earlier so we can rest later Dubu." Jeongyeon drag Dahyun out to the class.

"You call me what?!"

"DUBU!!" Jeongyeon laugh.

"YOU OSTRICH!" Dahyun laugh.

This is how close they are. Jeongyeon always spend her time with Dahyun since Dahyun her only one sister. Mr. and Mrs. Kim rarely be at home, that's why both of them are close with each other. For Jeongyeon, Dahyun is her world. Jeongyeon would never let Dahyun hurt, if Dahyun hurt she will always blame herself for that.

~

Jeongyeon just stare at Dahyun who is smiling at her phone. She chuckle when she saw Dahyun giggling, she sit beside Dahyun. "Someone is in love."

Dahyun blush. "Aaa unnie"

"Who is it?"

"It's a girl. You will know soon. What about tomorrow? Let's meet her together."

"Tomorrow huh? Okay sure. This is fun, I will expose you to your girlfriend or I can say my sister in law." Jeongyeon laugh.

"Aaa unnie stop it" Dahyun's face are getting red like tomato.

"Fine I will stop. But still, who is unlucky girl to have you. So..unlucky."

"Aaa unnie!"

~

Jeongyeon lied on Dahyun's lap who is busy watching drama. "Wait isn't this drama end few years ago?"

"Yup. Scarlet Heart is my favorite but it need another season. I NEED WANG EUN AND SEON DEOK TO BE TOGETHER UGH." Dahyun said while munching a chocopie that she held.

"Yea yea whatever. Okay what episode is this?"

"Episode 15. The episode when Prince Eun start falling in love with Seon Deok" Dahyun grin.

"Then they died right? Hahaha"

Dahyun hit Jeongyeon's shoulder. "Its not funny. How dare you laugh at that scene."

"Aw mianhae Dubu-ssi." Jeongyeon pinch Dahyun's cheek. "Okay let's continue watch your favorite drama." Then, Jeongyeon fall asleep after 10 minutes watching drama.

Dahyun laugh at Jeongyeon who is sleeping on her lap. She carry Jeongyeon to her room. "Why you're so heavy unnie?" She sigh but she smile when she remember how Jeongyeon always let Dahyun piggyback her. "Am I heavy like her?" Dahyun thought.

~

Jeongyeon feels hurt at her head. "What did that Dubu do to me last night?" She rub her eyes to get a clear vision of her surrounding as she feels something weird. "Where am I?"

"Hyung-nim!" A man shook Jeongyeon's body.

"Who's your hyung huh?! I'm a yeoja!"

"So hyung, this is me Baek-ah."

"Who is Baek-ah?I-" Jeongyeon stare at a man in hanbok named Baek-ah who is standing in front of her. "Aren't you are an actor?!"

"Ac-what? Hyung you're weird." Baek-ah sigh.

"Is Your Highness alright?"

"No Ji Mong. I don't understand what is he talking just now." Baek-ah explain.

"Woah okay tell me what happened? Why does my head hurt?" Jeongyeon asked.

"Your Highness, you fall and your head got hit so hard when you're searching for Prince Eun and his wife." Ji Mong stated.

"I search for who? Eun? Ouh please what is this? April fool? Why am I in hanbok? Why both of you in hanbok too? What is this place? And why you keep calling me Your Highness?" Then she realize something. "Wait, who is your name?"

"My name is Baek-ah your brother and this is Ji Mong, astronomer of Goryeo."

"Goryeo?" Jeongyeon look at them in disbelief. "Okay, what is my name? And the person that I was searching for?" She ask more questions as she want to confirm everything.

"Your name is Wang So, 4 prince. The king asked you to search for Wang Eun our brother and his wife." Ji Mong explain.

"Omo.. I'm really in scarlet heart." Jeongyeon mumbles.

"Scarlet heart? Hyung, you really need to rest now." Baek-ah pat Jeongyeon's shoulder.

"Let's go." Ji Mong said as he stand up and walk out from the room with Baek-ah.

"I was searching for Prince Eun? Wait, isn't they in Damiwon?" Jeongyeon smirk. "Let's go and stalk them." She look around before she left her room and go to Damiwon. "I am Wang So now, Prince So wahh.." She thought. Jeongyeon heard voice of two people talking, she peek and saw two figure of a man and a women but she froze as she recognize figure. "Dahyun? And the other one isn't that Mina from Jihyo's class? Ouh this is weird."

"What do you think?" Dahyun said as she show Mina a rabbit that made of towel that she make.

"Wahh, this amazing. It looks like a real thing." Mina smile.

"Well, I'll have to show you all my skills." Dahyun take more towel and start making many animals with it.

"Isn't this the part where Seon Deok let Eun win? Aww so sweet." Jeongyeon giggles.

"See! I won! Didn't you see, I won again?!" Dahyun smile proudly.

Mina just smile when Dahyun said that. For her, Dahyun's happiness is hers'. She let Dahyun take her arm to hit it because she lost.

Dahyun ready to hit Mina but she stop when she saw bruise on Mina's wrist. "My hand hurts from hitting you too much. Why does it hurts too much?" Dahyun said while look around.

Mina look at her side and she remember something. "Oh yea, this is yours." She give the slingshot