[A/N]

So here was ysicretive's request XD the second update for the day! :) keke! I hope you'll like it!

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[Yoona's P.O.V]

"Krys?"

I knocked on her door but I didn't get any response.

"Soojung... It's me, Yoona..."

"It's not locked." I heard her from the inside.

I turned the knob and locked it when I'm already inside.

I saw her leaning her back on the headboard while hugging her knees.

"Are you okay?" I asked, sitting beside her.

"I hate her. I hate that Kwon Yuri!" she was crying.

"It's okay... I'm here, Soojung..." I hugged her and helped her to calm down.

"This is the first time, Yoona unnie. See what Yuri did to my unnie? She almost slap me, unnie..."

I cupped her face and kissed her forehead.

"Are you willing to forgive your unnie?" I asked.

"I will if she'll stop hurting herself... If she'll break up with that Kwon." she said.

"She promised me a thing..."

"What is it?"

"If Yuri won't call her tomorrow or until our last day here then she have to leave her or else..."

"Or else what..."

"I'll leave..."

"You'll leave?!"

I nodded.

"But she asked me not to even if Yuri will stay..."

"And you agreed?" She was coldly staring at me.

"You want me for her right? Then I'll do everything it takes. Even if I'll end up hurting to."

"Yoona unnie..." She hugged me.

"Please be strong for your unnie..." I said.

[Krystal's P.O.V]

I woke up with a sound of piano in my room.

I rubbed my eyes and saw Yoona unnie sitting at the edge of my bed and gesturing me to look at who's playing.

It was Sica unnie. She was singing 'My Best Friend'... The song that she composed with Yoona unnie...

(My Best Friend By SNSD)

There’s no one else in the world like you, my friend
 You’re my joy and my soul
 I’ll continue to treasure this preciousness
 I swear to the heavens forever
 I love you my friend
 You’re the gift in my life, my friend
 You’re my jewel and my miracle
 I’ll continue to appreciate you
 I swear to the heavens once again
 I love you my friend

We make pretty nicknames for each other and play around (And play around)
 Sometimes, we’ll share our nice outfits (You are my best friend)
 Put my number as your first speed dial contact
 We’ll be best friends forever
 Forever you’re my friend
 You’re my only one, my friend
 Forever you’re my friend
 You’re my only one, my friend

She sang. Tears were forming at the corner of my eyes.

She stood up and smiled at me.

"You said when we were still young that even if Yoongie's my best friend, you're still the best friend I'll have until I die. Please forgive your unnie, Soojung-ah... Sica unnie's very sorry. I love you very much."

I stood up and hugged her. We both cried and I saw Yoona unnie smiling at us.

"I'm so sorry Krystal, you know that I love you very much."

I just nodded in response.

She pulled away from the hug and cupped my face.

She wiped my tears and kissed my forehead.

"Sica..." Yoona unnie called and gestured something to her that I didn't understand.

Sica unnie pulled something on her pocket and I soon realized that it was my necklace.

"Would you still accept this even if I was a bad unnie to you?" she asked.

I nodded and smiled.

She helped me wear the necklace back.

It has a locket on it. A let