BL School life

Computer science major Chu Sangwoo is the epitome of an inflexible and strict rule-abiding person. While working on a liberal arts group project with freeloaders who don’t put in any effort, Sangwoo reasonably decides to remove their names from the final presentation.

But he didn’t imagine how involved he would become with the person whose study-abroad plans were messed up because of that project. The involved person: the campus star who everyone knows, Department of Design’s Jang Jaeyoung. He

This is the story between a young innocent ballet boy and a passionate, determined boxing boy. The two met at the children's palace, and since then, they have grown up together supporting each other. May there be hardships, may there be obstacles, yet they never stopped pursuing their dreams. The beauty of the salad days is the sweat from the hard work and the bonding of friendship. Although they have completely different paths set up for them, what never changes is their beautiful friendship...

When Sawoo gets bullied in high school, his only friend Kido promises to teach him how to become the greatest villain.
But Kido goes overseas after teaching Sawoo only two of the three rules.

Faithfully following the two rules, Sawoo writes Kido many letters in the hope that he will get to learn the last remaining rule but Kido never replies.

One day after four years, Kido shows up in front of Sawoo, thinking those were love letters.