Daeryong changed his identity and became a teacher, but that didn't erase his memories about his past schools. One day, a random student ran in the office telling two students were fighting, his life was brought back to where it began.

Where Daeryong never knew you had curly hair because you always straightened it

Some people are meant to be with each other, but certainly not them. In which Yifan could not offer his love for someone who loved him the most  

Winter had always been a fun time for the twins. A time to relax and play pranks on one another, a time to simply indulge in simple pleasures. However, nothing lasts forever. Life can change in an instant and somehow, some way, everyone must carry on.