
It's been two months since you and Nayeon got back together. After overhearing a serious plot while on the job, your boss tells you to take some time off. You decide to do so by visiting Nayeon during one of her music show performances. Whether in the dressing room or on the stage, you can't deny that Nayeon gives you the butterflies in your stomach.
A random letter could be an opportunity for a lot of things for Kim Dahyun. She just hoped that it was enough for Nayeon.

YN and Nayeon were classmates back in high school. Two different personalities, Nayeon is a bully who orders YN for her own benefit through his attribute of having an exceptional intelligence and social awkwardness with people. 15 years later, they met again unexpectedly, got introduced to their improvements over their lives. As they try to move forward from their horrible past, a turn of events pushes them to revisit and realize their regrets.