Starting with a thrilling premise in the first episode, Teach You a Lesson escalates its drama in Episode 2 and shifts its focus beyond a single bullying incident to a school that is run by fear, violence, and criminal influence. While Na Hwa-jin keeps on trying to save the students, several new characters join the party, peeling new layers of the school's long-standing issues.Undercover agents, teens in trouble, and budding gangsters are among the new characters introduced in Teach You a Lesson Episode 2, which also features some of the show's most harrowing and provocative moments. Let's take a quick look at the main characters and actors of the episode.Na Hwa-jin steals the spotlight as usual in Teach You a Lesson Episode 2 View this post on Instagram Instagram PostIn Teach You a Lesson Episode 2, Kim Mu-yeol's Na Hwa-jin is the most outstanding character. The ERPB officer has come to Guun Hi-Tech School with a mission to make things right, with a combination of threats, sarcasm, and unconventional approaches to teaching. Hwa-jin, a teacher, an investigator and an action hero, lends a fresh perspective to the story, whether he's taking on delinquent students or compelling them to concentrate on discipline and hard work.The episode also alludes to his past, as political party members also start investigating him. Throughout, Hwa-jin has to contend with not only student bullies but also criminals who have connections with gangs, making him one of the most powerful, intelligent and strongest personalities in Teach You a Lesson.Bong Geun-dae and the students at the center of the chaos View this post on Instagram Instagram PostIt is the addition of Pyo Ji-hoon in the role of Bong Geun-dae that really stands out in Teach You a Lesson Episode 2, and he seems to be a shy transfer student at first. It later turns out that he is a mole for the ERPB gathering information from inside the school.His mission gets him involved with students like the determined teen, Kim Hyeong-ju, played by Jeon Bong-sik, who is bullied all day but is determined to get through with his studies. As they become more of a friend, emotions are added to the story.The protagonists are on one side, and Park Seong-hwan, played by Yoo Tae-joo, and Cho In-beom, played by Ok Jin-uk, are the episode's main antagonists. They seek power and approval from criminals, and the series explores the bullying, peer pressure, and repercussions of their parents' failures in this regard.New villains expand the world beyond the classroom View this post on Instagram Instagram PostIn Teach You a Lesson Episode 2, the narrative goes beyond school bullying as the story introduces Lee Tae-hwan as Jang Gwon-hyeok, a young gangster who influences students to commit acts of violence for his approval. Unlike the bullies in Episode 1, he's not just the criminal path many troubled teens can take, he's one of them who pushes the stakes up for Hwa-jin and the ERPB.The episode also has more time with Choi Gang-seok (Lee Sung-min), the founder of the ERPB, who is under increasing political pressure from critics who don't like how the ERPB is doing its job. These scenes create an additional layer of conflict outside the classroom. New friends, enemies and victims have joined the pages of the story by the end of the episode, making for more mysteries and clashes of action in the episodes to come.For more such insights on Teach You a Lesson, keep following SoapCentral.