Description:

Nam Ji-il rolled into the high school that is famous as the Royal Kingdom of the delinquents. On the first day of school, he becomes a well-known bread shuttle boy in the entire school. While suffering from chronic heart disease, his weak body also has to suffer from assault any other kind of bullying, however, caused by an unexpected event his life reaches its turning point... (Source: MU)

Alternative Titles:

Trigger (Bulmanitnyang), Teurigeo