Solbin wanted to make a cake for Yulhee and Mingyu was more than willing to help.  

"Look out of the window! First snow's coming." "Woah, it's so beautiful!" "Not as beautiful as you." "Eyyy… you're so cheesy!"

"Mingyu-ssi," called Solbin with nervous writen all over her face. "May I ask you a favor?" Mingyu nodded, ignoring the nervous the girl had. "Sure. What is it?" "Umm..." Solbin looked at her cellphone in her hands before she continued saying, "Can we take a picture together?" with her face reddened.

It started with chocolate   Chapter 1: Misunderstanding, a story of Mingyu and Solbin Chapter 2: A Visit, a story of Wonwoo and Yulhee.

Because Solbin was too innocent for Yulhee and Mingyu to handle with.

Highschool!au where Haein is an amazing violin player and Yulhee ends up falling in love with her when she sees her at the concert.