The target is Oh Jung-Seok and all the students at Sampo High School!

The scale itself is completely different from before. Now, the Iljin Alliance, a group of all the bullies from each school, begins to grab and bully Sampo High School students at random. One day, a man came up to Jung-Seok and told him to come to visit him as much as he wanted...

(Source: Naver, translated)