This is another sideline of the IOI Shikshins One-Shot Collection specifically the story "My First and Last".  A story on how the baddest on the university faced her ty life with a petty grudge on her little brother and a contemplation of the love of her life.

Jung Chaeyeon was a typical student taking her evening classes. For her, life was well. She met two friends and suddenly, things went unexpected when she fell for one of them.   This is a sideline for Dance-Off from IOI Shikshins One-Shot Collection, on how ChaeKyul came to be in the story.