They finally decide to have the conversation they have been avoiding for so long. Off the bat, they agree to be completely honest, no holds barred. It was not a fight, but it sure felt like a war.

Son Chaeyoung has a busy college life, full of extracurricular activities on top of her academics. But she will always have time for Myoui Mina, and grades be damned, she will do her best to get Myoui Mina to fall for her.

Carefully planned and hopefully well-executed, Chaeyoung celebrates Valentines Day with the love of her life, Mina.

"She is as warm as the radiant sun." "She is as soft as the glow of the moon." Together, SinB and Yerin embark on a journey of discovery - about themselves, about each other, and about the universe.  

Chaeyoung looks back on her relationship with Mina and wonders how everything turned out the way it did.

Chaeyoung writes a letter to Mina, pouring her heart out to her best friend who is also the love of her life.  Will they sacrifice years of friendship to start a relationship?