Lee Bong Jun appears in "Teach you a lesson" as Cho Gyu Cheol, a prisoner who is pardoned and then returns to study at Jinwon High School.
In the film, he is both an important link connecting the whole story from beginning to end, and the last villain behind most of the conflicts and tensions.
Teach you a lesson" tells about the activities of the Education Rights Protection Bureau - an organization established to restore order to the Korean education system that is in crisis due to extremist, limiting behaviors from students, teachers and parents.
Lee Bong Jun's character Cho Gyu Cheol initially appears under the guise of an extremely repentant prisoner, but gradually reveals a terrifying cold and distorted nature.
The media assessed that the actor excellently portrayed the contrast between the repentant appearance and the cruelty hidden deep inside the character.

In particular, Lee Bong Jun was praised for his terrifying transformation into the mastermind behind increasingly sophisticated school violence cases as well as illegal drug distribution activities.
From maintaining calmness and calculation in critical moments to almost mocking expressions when recalling past crimes, he brought a powerful performance, contributing to enhancing the appeal and tension of the film.
The confrontations between him and inspector Na Hwa Jin (played by Kim Moo Yeol) also become the most prominent segments of the work.
Lee Bong Jun shows the ability to express explosive emotions when depicting a person who is gradually rushing into the path of self-destruction, proving the ability to build a multi-layered and attractive villain.
The smooth transition between innocent and harmless appearance and cold cruelty has helped him create one of the most memorable villain roles this year.

Born in 1995, Lee Bong Jun is currently 31 years old. He debuted in 2020 through the musical "Jesus" and since then built a solid stage career through works such as "Werther" and the play "Bad Magnet".
Currently, he participates in the musical "Mad Hatter", continuing to affirm his reputation as a versatile stage artist.
Besides, Lee Bong Jun is also constantly expanding his acting career on screen with many different genres.
After debuting to the public through the movie "Youth of May" in 2021, he continued to appear in works such as "Alchemy of Souls", "Chief Detective 1958", "The witch", "Resident playbook" and "I am a running mate", showing his ability to adapt to both traditional television and online platforms.
After the impressive performance in "Teach you a lesson", more and more viewers are interested in Lee Bong Jun's next step.
Meanwhile, "Teach you a lesson" has risen to number 1 in the ranking of the most popular non-English TV show on Netflix globally every week, with 6.4 million views after only 3 days of release.