"Kung saan susunduin ni Seulgi ang 'Girlfriend' ng kanyang bestfriend na si Wendy sa airport, pero as soon as she saw Wendy's girlfriend...she was shocked."

It isn’t great news, really. Joohyun's first encounter with her new manager leaves such a terrible impression that the soloist is positive things are just going to go downhill from here on out. That, and Wendy Son certainly knows how to keep her on her toes.

Wherein Irene- the famous cheerleader of DwiFinite University visited her little sister in the hospital but she accidentally entered the wrong room which led her to an encounter with a gorgeous lady with a beautiful voice and an antsy personality.  What will happen if you fall in love with a person who is completely your opposite?  Will you be able to endure her or will you just leave her?

based on a poem '' But You Didn't '' .

Remember the people you love, Make sure to love them before it's to late 

Joy dies after she gives birth to her daughter, Son Joohyun, leaving Wendy to raise her as a single mother with the help of Yeri, Wendy's sister. Joohyun grows up treasuring the letters her mother wrote for her to receive on her first ten birthdays. On her tenth birthday, Joohyun reads the last and most important letter that Joy left her; it tells the story of Wendy, Joy, and Bae Joohyun when they were young college students. But the end of one story only means the beginning of anothe

Son Seungwan finds a connection with a mysterious transfer student named Bae Joohyun, because of a simple blue scarf.

Class rebel Seulgi hates class president Joohyun to the core and the feeling is mutual. Every little interaction proves disastrous to the sour relationship. What happens when a certain snowman is being unexpectedly brought into the picture? Would this pair of rivals start behaving nicer towards each other?