"Because, that ball is mine. I dropped it 18 years ago here.. in this house. I couldn't believe it's still there."

"What do you mean?! 18 years ago?"

Lays face turns cold. He sighs in frustration. "I.. I lived here. Still my present house is next door. This used to be the house of my bestfriend.. or someone who I thought was my bestfriend."

"What happened to that person?"

Lay gets silent. Yusi speaks through-

"Dear friend.. No friendship is truly sealed until you share a secret. Perhaps you can just do that? Am I not a trustworthy friend?"

Lay averts his eyes, his throat suddenly closing up.

Yusi tries to make eye contact, "Sorry if my idea was terrible."

Lay replies, "I'm so sorry, Yusi.

There are some secrets that I'm just not ready to share, that I'll never be ready to share. But you really are very trustworthy and good friend."

"Thanks Mr. Zhang," Yusi smiles,

"Probably I dulled your mood. Let me show something fun to lighten up your mood. Follow me."

"Where are we going?"

Before lay can reply, Yusi throws open a door and strides in a small room inside the parlor. Lay hurries to keep up.

"This is where the piano is kept. It was on the main room but I shifted here for less noise and more concerntration."

"Oh wow you play piano?"

Yusi swiftly moves and sits on the piano bench. She starts playing a lovely melody on the piano.

Lay stands quietly in a corner, waiting for her to finish. Then she hits a wrong chord, the discordant notes jarring her out of the piece.

"Damn it, I'll never learn this song." Yusi says aggressively.

Lay awkwardly clears his throat and Yusi turns around the bench to face him.

Lay asks, "What song is it?"

Yusi replies, "Doesn't matter. I'll never be able to play it anyways."

"Why not?"

"It's a duet of piano and beats. I don't have drums and the only person I know who can do worth a damn vocal percussion went away long ago."

"Your brother?"

"No, Mrs. Oh's nephew. I learnt this song when he came to visit. That time Mrs. Oh wasn't around, hearing her footsteps he ran away.. and never come back-"

"Yusi," Lay sits beside her, "I will do the beats. I can beatbox, I don't know if as good as Mrs. Oh's nephew. But atleast you'll learn the song."

"What is beatbox?"

"A new term for Vocal percussion."

Lay turns to face the sheet music, and, out of the corner of his eye, he sees Yusi do the same.

"Hmph, let's take it from the top. You start playing the piano and I'll provide the beats. Okay?"

"Okay!!"

Soon, Lay and Yusi creates a beautiful melody perfectly.

"Finally!" Yusi finishes the piece and closes the lid on the keyboard.

"Still in a bad mood?" Lay asks.

"No, I suppose I should thank you."

"I think that would be nice. But if you really want to thank me.. there's something I need your help with."

"Help?"