"Nico-chan? Nico-chan?!", Maki called Nico as she was not answering the phone.

Suddenly, Nico hung up.

"Wha-what the? Hey! Nico-chan!?"

... ... ...

"Gosh, what's up with her? And I was just about to say something very important to her..."

Maki wondered for a moment why did Nico stopped calling.

"...I wonder if I should call her again..."

... ... ... ...

"...Nah, I guess it is not necessary to tell her about it now. I'll tell it to her next time I guess..."

Maki decided not to call Nico, and went back to her piano.

She had no idea Nico was worried about who was calling her.

"Maki-chan did not call me? If it wasn't her, then who could it be?", Nico said to herself.

"I know Maki-chan. She would not have lied to me. I guess she really did not call me..."

While Nico was thinking about what just happened, someone called her.

"...Onee-chan..."

"Ah! Cocoa, good morning!", Nico replied to her little sister who had just woke up.

"...Onee-chan...I'm hungry..."

"Eh?! But you just woke up..."

"Hungry! Hungry! Cocoa wants to eat now!", Cocoa replied.

At that moment, Nico decided to forget about what happened and decided to focus on her siblings.

At least for now...

Two days later...

It was 6:47 PM. Nico was shopping for dinner for her siblings.

"I know mom should be doing this, but I she said she'd have overtime for work this week. Argh...guess it really could be helped."

Nico was walking back home when suddenly her phone rang.

"Huh? A call?.....Wait! Is this?!"

The person calling her had no name. Just like it was two days ago.

"That person again? How am I gonna respond to this?"

Nico thought what to do. She figured that the stranger would not say a word like last time.

"Hmm...I guess I could call her...but I'm going to deepen my voice so that he/she would not recognise me."

Nico responded to the caller with a deep voice to disguise herself.

"Oh! Who is calling? Nico-chan is not here right now, could you just leave a message?"

"Hehehe...", the caller laughed.

"Wha-what? He/she is laughing? Don't tell me...he/she did not fall for it?", thought Nico as she was shocked by the caller's response.

"My, my. So this is how Maki's best friend talk to other people."

"Eh?...She...she knows Maki-chan and our relationship too?"

Nico now wonders who was calling her. It seemed like the stranger knew about her and Maki very well - and her voice seemed familiar...

*Note: "Onee-chan" means "big sister/brother" in Japanese.