"MOOOOOOOOOM! Why didn't you wake me up!" I yelled as I got out of bed.

"I've been trying to wake you up for the last hour, Dearie. You just wouldn't budge!" She shouts back.

"We actually thought you were dead had you not been speaking on your sleep," my younger brother, Jinyoung teases, peeking into my room.

"SHUT UP, JINNIE!" I answer back as I organized my bed.

He laughs seeing me panicking. "It's Saturday, you don't have work so why the rush? Are you going to meet that guy... what's his name again... Mark?"

I stop on my tracks hearing his name. 'How the hell does he know Mark?'

"Wh-what? Mark who?" I say, pretending to not know what he is saying or who he is referring to.

"Mark. I don't know... You were calling his name in your sleep. Is he your boyfriend, noona~?" Jinyoung teases me.

"Stop it!" I elbow him as he's now beside me.

"Come on~ can't your little brother know~?"

"I know no Mark," I say with a serious tone, hoping my brother will believe me.

"Wait! I think I know now! Mark... Tuan! Your childhood friend, right?"

'This kid!!!'

"Come on, Sis! Am I right? Hmm? You're meeting him? Is he back? For good?"

'Is he?'

----------

I sit on a swing at the playground where he and I used to play when we were kids. I bend down and write our names on the sand with my right hand. Mark. Sheila.

I smile to myself as I think of old memories. I was actually happy reminiscing about the old times until a certain memory came to my mind.

- FLASHBACK - 20 YEARS AGO -

"You're leaving? Far?" I ask Mark in between sobs.

"Y-yeah..." he answers, avoiding my eyes.

"But I thought we'll be best friends forever? What will happen to the time capsule that we will open 20 years from now?"

"Shark..."

"What?"

"Shark."

I look around the playground, looking for anyone dressed up as a shark. There is no way he's referring to a real one, right?

"What shark? You're being weird..."

Mark takes a deep breath. "I promise it'll always be Shark. Okay? We'll see each other again in 20 years. I promise."

He offers me his right pinky finger.

"Hmm?"

"Pinky swear?"

Not far from where we're standing, Mark's mother calls to him. "Mark? Let's go, dear."

"Sheila, let's promise to meet again. Please?"

His mother