Yoona kept on walking in the sidewalk while admiring the shops

"Wahh" Yoona said as she saw a toy store

"I already have a stuff toy anyways" Yoona shrugged and continued on walking

She stopped in front of an old shop when she heard a piano playing

She looked in the door weirdly

as she heard sobs as well

Yoona hesitated to open the door but then her curiosity wins and finally she opened the door and stepped inside the old shop 

She closed the door as she heard a depressing tune played

Yoona followed the source of the sound and stopped when she notice she entered an auditorium. 

A four year old girl was sitting there playing the piano. Well she's alive

Yoona clapped which made the four years old girl suprise

"Nice job!" Yoona said in korean as the little girl is clearly korean

"K-Kamsahamnida" Little girl bowed

"Mind telling me your name?" Yoona asked as she sat beside the younger girl

"Annyeonghaseyo! Seo Joohyun imnida!" Seohyun bowed at Yoona

"Annyeonghaseyo! Im Yoona imnida'' Yoona bowed and patted Seohyuns head

"What's your age?" Yoona asked as she played rando keys in the piano

"Four years old unnie" Seohyun said

"Ah~ Your amazing~" Yoona complimented Seohyun

Seohyun blushed and thank Yoona again

They had a little chit chat but Yoona became playful since she's talking with a kid

Yoona looked at her watch

"It's already 6:00 pm. Come on. I'll send you home" Yoona said and Seohyun nodded

As they were both walking well Yoona is holding little Seohyuns hand

"Do you know where you live?" Yoona asked

"Dae unnie! Just turn left in that corner and the fifth house is where I live" Seohyun said, Yoona nodded

Yoona carried Seohyun as they will cross the street

After safely crossing the street and arriving in front of Seohyun's house

"Well, unnie needs to go now" Yoona smiled at little Seohyun

Seohyun pouted

"I will see you again right unnie?"

"Sorry Joohyun. Unnie will be busy after this day" Yoona sighed

Seohyun nodded in understanding

"Say, I will give you my Keroro Plushie, You going to be happy?" Yoona asked

Seohyun looked at Yoona shyly

Yoona handed Seohyun the Keroro plushie with an alligator smile

"Go-Gomawo unnie" Seohyun said as she played with her bow

"Your welcome Joohyun-ah" Yoona smiled "And oh! have the other pair of this ring" Yoona added

Yoona wore the ring into Seohyun's little thumb  and she wore the other pair of Seohyun's ring in her ring finger

"There" Yoona giggled "The ring is in your thumb so it won't fall. when you're old enough wear it in your ring finger"

"Gomawo unnie" Seohyun kissed Yoona's cheeks and Yoona smiled and patted little Seohyun's head

"Be a good girl now, see you in the future" Yoona smiled and stood up after knocking the door of the house 

Seohyun watched Yoona slowly walking away

Seohyun put the keroro plush down after her mother opened the door and chased Yoona

"Yoona unnie! Yoona unnie!" Seohyun's little voice called out for Yoona

Yoona turned around

"Ne?" Yoona asked

"Have this unnie! So you'll always remember little Joohyun wearing that bow!" Seohyun said as she handed Yoona her pink 

bow

"I will Joohyun. Unnie will take care of your bow and our ring, you take care of Keroro and take care of our ring okay?" Yoona said

Seohyun nodded

"I promise!" Seohyun showed her pinky and Yoona wrap her other pinky with Seohyun's

"I promise I won't forget about you" Seohyun and Yoona said in unison and giggled

"Go ahead now~" Yoona said and Seohyun waved at Yoona before walking back home again

Yoona smiled

"See you Hyunnie" Seohyun heard her new nickname and blushed