Who knows the name of this film about the underworld on campus in South Korea?

I know it's called Infernal Affairs on Campus, which is the name I saw before. I wonder if there are any other translators. Hehe, it's about an underworld boss getting a high school diploma in high school. His men secretly helped him all day and made a lot of jokes! Later, a female classmate in the class went out to be a dancer in order to go to college, and just went to work in a nightclub run by the underworld boss ... The movie was very funny at first, and many students ran desperately to avoid being late. The boss was hit on the head by the teaching director because he was late for helping a female classmate who dropped a pack of sanitary napkins while running. Ha ha. ......

I hope I can help you!