As soon as the classes ended, Yuna was the first one to get out of the room and avoids the other students. She walked faster until she bumped to the group of men.

"S-Sorry Miss-Oh, Yuna? Good thing it was you. Did you know what happened?". One of the men said as he helps Yuna to stand.

After being able to look at the guys, Yuna finally found out who are them. "Sorry but...no?". She answered innocently.

"Oh yea, that's why we're here. Your sister is at the hospital. She got into an accident just now and I think you have to follow her, she's calling your name". The guy she knew as one of her sister's classmates, Choi, said as if he was worried.

"What?! Are you sure it was my sister?". Yuna asks, shockingly.

"It was surely Chaeryeong. You know what? Let's go, come with us. We knew what hospital she is right now".

Because of Yuna's worries, she didn't hesitate anymore and come with them. The guys successfully took the woman and Yuna was expecting to arrive at where her sister is.

...

"Chae, I'll just go with my friends. I'll go home before 7". Yuri saud as the professor went out.

"Okay. Take care". Chaeryeong replied.

After a while, they all exited the room. The moment Chaeryeong went out, she immediately took out her phone and went to the message app.

To :

Wait me at your room. Don't go anywhere, okay?

"Yuna didn't replied?". Yeji asks after being able to see Chaeryeong's message.

"She just seen it". Chaeryeong respond. "Don't worry, she's not that kind of person. I knew Yuna. She will always follow me".

"Not always. Remember?". Ryujin interrupted behind, making the atmosphere changed.

"You don't know what exactly was with Hyunjin and Yuna so you shouldn't talking about that!". Lia scolded and slap the woman's shoulder.

"Yah! My arm's already swollen because of you freaking hand!". Ryujin shouted while rubbing her arm.

"Well anyways, let's just check Yuna on her room". Yeji stated and they all began to walk.

But as they arrived, no one's already inside of the room. Chaeryeong then unlocked her phone and decided to message Yuna again.

To :

where are you? I said wait for me. Where did you go?

She waited for a moment but Yuna didn't replied. "Let's go. Yuna might went home already". Chaeryeong said and walked again, leaving the girls behind.

"Yah, did you texted her again?". Yeji asks as she ran towards Chaeryeong.

The woman nodded. "She didn't replied yet".

"What if-".

"Chaeryeong?". A familiar voice interrupted Lia's statement. All of them looked behind and a saw a tall woman holding a book.

"I thought you're at the hospital". The tall woman said in confusion.

"Me? Why would I go to the hospital?".

"I heard that you got into an accident earlie- W-WAIT, IF YOU'RE NOT AT THE HOSPITAL... THEN YUNA IS..."

As soon as Chaeryeong heard the name, she walked closer to the taller woman. "Yuna? Why? Do you know where Yuna is?".

"Um... There's a group of men talking to her earlier saying that you're in the hospital and telling her to go with them so she could see you".

The girls exchanged a look. "Did she come with them?". Chaeryeong asks, worries can be seen on her eyes.

"She did".

"Rina, you're assigned with the cctvs’ right? Can we see it?".

Rina nodded. "Yeah sure. Follow me". All of them immediately went to the room where they can monitor the cctv and Rina quickly opened it.

They replay the video and finally saw who's Yuna was talking with. Chaeryeong gritted her teeth.

‘Dang it. It was Hyunjin's persons!’ Chaeryeong thought and clenched her hand into balls and slammed the table.

"We have to find Yuna". She paused and turned around. "NOW". She finished her word and exited the room. The girls exchanged a look and worriedly followed Chaeryeong.

...

"Is this really the way to the hospital?". Yuna asks suspiciously as she noticed that they're going further and further.

"NO". As soon as the guy said that,he quickly grabbed the handkerchief and covered Yuna's nose, causing the woman to faint.

"Choi, hurry up. Hyunjin's waiting!". The guy beside Yuna shouted and as he said, Choi sprinted the car.

Minutes ago and they finally arrived at the abandoned mansion that Hyunjin told them where to bring Yuna. One of the guys opened the door and carries Yuna inside.

"Are y'all sure no one noticed you?". The guy, sitting at the black chair asks.

"Definitely sure. You know us. We never do failed jobs". Choi answered.

"Alright. Tie her on the chair and cover her eyes". He ordered and the men immediately did what he said.

"Is that her phone?". Hyunjin asks and went closer to the unconscious woman, grabbing the phone on its opened bag. "Might better to play with your sister". A devil smirk appeared on Hyunjin's lips as he opened Yuna's phone.

How lucky he is that it has no password.

After seeing that Yuna's already tied at the chair, Hyunjin told the men to leave them.

Hyunjin then didn't waste any time and immediately goes to the message, finding Chaeryeong's contact.

Chaeryeong eonnie

Take care, i love you.

Wait me at your room, don't go anywhere, okay?

Where are you? I said wait for me. Where did you go?

Yuna, please, answer my call!

Tell me where are you. You're okay right?

Yuna I'm not at the hospital!

Please, message me if you're still there, i missed you. I love you.

"How sweet". Hyunjin mumbled and chuckled. "How I wish we have this kind of relationship... Shin Yuna".

He didn't stop. He scrolled up again to read the couple's conversation. And there're words that got his attention. ‘My girlfriend...’.

"Tss. Girlfriend huh. Is this the reason why you traitor me?". He walked closer and closer. "I never knew you could do this to me, Yuna. You thought nobody won't tell me that you're watching all my actions? You thought I won't find that CHAERYEONG WAS YOUR SISTER? and most importantly, do you think that I won't notice that you're hanging with me to know that I was that killer? How smart you are to hired a spy-oh, I mean, how stupid you are to hired an untrustworthy spy".

The whole room got filled with Hyunjin's devilishly laugh. "Did you forgot that money can do everything? Just one pay, everything will be revealed. Sorry, you're spy is worth of 30 Million".

He sighed. "And yes. You're not wrong. I was definitely that killer".

"Let me see what your sister–OR SHOULD I SAY... YOUR GIRLFRIEND... can do to save you".