Get Schooled characters break the usual manhwa pattern: there is no growing ensemble, no power-ranked roster, no ally-of-the-week system. The webtoon's cast is deliberately small, built around Na Hwajin, the inspector at the center. If you came here looking for Bong Geun-dae, he isn't from the webtoon at all: Netflix's Teach You a Lesson created him. This guide covers Na Hwajin, the bureau figures around him, and how the drama added to the roster.
TL;DR: The webtoon's recurring cast is thin: inspector Na Hwajin, plus Im Han Rim and Choi Gang Seok at the bureau. Everyone else rotates per school case. Bong Geun-dae is a drama-only character. Netflix's Teach You a Lesson (June 2026) casts Kim Mu-yeol, Jin Ki-joo, Lee Sung-min and P.O as the bureau's four.
Official trailer for Teach You a Lesson, the Netflix drama adaptation of Get Schooled (Netflix K-Content).
Na Hwajin: the enforcer at the center
Na Hwajin is the protagonist of Get Schooled (Korean: 참교육, by writer Chae Yong-taek and artist Han Ga-ram), and he works differently from almost every other school-action lead. He is an inspector for the Educational Rights Protection Bureau, a fictional government body authorized to use physical force against violent students when a school's own discipline has collapsed.
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Most action manhwa protagonists transform. Na Hwajin doesn't. His backstory is set before episode 1: his fiancee Gayoon Choi was killed by a student, and that loss is why he took a job that lets him do what teachers legally can't. Across all 111 episodes of Season 1, his methods stay consistent and his temperament barely moves. What changes is the school around him. Each arc drops him into a new institution with a new pathology, and the story measures the school against him rather than him against the school.
That makes him closer to a procedural lead than a shonen one. He researches before he acts, reads a school's power structure before throwing a punch, and leaves each case with the problem partially fixed and the system that produced it untouched. Readers who want a character arc in the traditional sense will find it in the people around him instead.
For where to start, how Season 1 and Season 2 split, and where you can read it legally:
Get Schooled Manhwa Reading Guide →
Bong Geun-dae: a drama original, not a webtoon character
If you searched "bong geun dae" after watching Teach You a Lesson, here's the answer up front: you won't find him in the webtoon. AniList's character index for 참교육 has no Bong Geun-dae, and coverage of the drama's June 5, 2026 press conference says the production created the character for the series. Maeil Business put it plainly: he's "an original series character who does not appear in the webtoon."
Pyo Ji-hoon as Bong Geun-dae in Teach You a Lesson. Still via Netflix Tudum (Netflix).
On screen he's the bureau's brains. Netflix calls him "the ERPB's deputy director," someone "more tech whiz than muscle, so he's often tasked with going undercover for the bureau." In Korean press he's the genius civil servant who finished KAIST in two years. Netflix's episode guide puts him at Hwa-jin's side in episode 2 and sends him undercover in episode 7 to help a father find his gambling-addicted son.
Director Hong Jong-chan explained why the drama needed him: viewers should be able to get a foothold in the story through Geun-dae, a character who grows while getting knocked around between Lee Sung-min, Kim Mu-yeol and Jin Ki-joo. P.O (Pyo Ji-hoon of Block B) said his own slightly hapless image probably got him cast. That's the useful way to read Bong Geun-dae: he's the drama's stand-in for the viewer, which is exactly the job the webtoon never needed, because it drops you straight into Na Hwajin's cases.
The supporting cast: Im Han Rim, Choi Gang Seok, and the EPRB
Im Han Rim isn't institutional set dressing the way she's often described. Across YLAB's wider Blue String Universe she's a deuteragonist in her own right -- the daughter of the owner of the spinoff webtoon Hanlim Gym, with a martial arts background that predates her EPRB casework. In Get Schooled, she and Na Hwajin function as a matched pair rather than inspector-and-bureaucrat: two field agents who use physical force where the bureau's persuasion fails, tied together by what the wider fan wiki tradition describes as a platonic life-partnership -- they spar at her gym, work cases together, and needle each other constantly. Jin Ki-joo plays her in the Netflix drama, where Im Han Rim and Kim Mu-yeol's Na Hwajin are the two inspectors handling physical enforcement, distinct from Bong Geun-dae's desk-and-cyber role.
Choi Gang Seok functions as the senior figure in the EPRB. He provides the formal context for Na Hwajin's work: what the bureau can authorize, where its mandate ends, and what happens politically when an inspector's methods generate headlines. Lee Sung-min plays him in the Netflix drama, which tells you how much weight the adaptation gives the role.
Beyond these two, the series refuses to build a bench. Na Hwajin doesn't accumulate allies, doesn't form a team, and doesn't collect rescued students as recurring friends. Every arc's cast -- the victimized kids, the enabling administrators, the abusive teachers -- exists for that case only.
Other confirmed names in the cast
AniList's official character index for Get Schooled (the same page cited throughout this guide) lists three more supporting-cast names beyond the four covered above: Se-Ra Gu (구세라), Joon-bin Lee (이준빈), and Daniel Hyeon (현 다니엘). None of the three have a published English bio yet, so we're not going to invent plot roles for them, but each is worth knowing about.
Se-Ra Gu is the more interesting confirmed name of the three: AniList also credits her as the lead of her own manhwa, Gu Se-Ra (구세라), a separate, completed series by a different writer-artist team (Seong and Ip-Peum Hang) in which she's the top student at a troubled high school trying to reform it to protect her childhood crush, a teaching intern. It's a spinoff built around a Get Schooled supporting character rather than a continuation of Na Hwajin's story.
Joon-bin Lee and Daniel Hyeon are both confirmed as supporting cast on the same official index, without further description translated anywhere we could verify. Daniel Hyeon's given name is notably Western for the cast, though nothing in the sources we checked explains why; we're flagging it as an observation, not a confirmed plot detail. If official character bios for either name surface in English, this section is the place we'll expand.
How Get Schooled characters map to the school cases
Season 1 runs 111 episodes, and the character design follows the case structure. Each case introduces three rough character tiers: the students being hurt, the students or adults doing the hurting, and the institutional adults who let it happen. Na Hwajin's job in every case is figuring out which tier is actually which, because the series' better cases scramble them.
The early cases keep those tiers legible while the reader calibrates what the series considers acceptable force. Later ones complicate the roster: schools where adults in authority are the perpetrators, which puts the case outside Na Hwajin's student-focused mandate and forces the more interesting character work.
This structure is why a Get Schooled character guide looks so different from a Lookism one. There is no roster to rank, no crew hierarchy to chart. The cast is a rotating case file with a handful of constants around Na Hwajin.
The Blue String Universe connection
Get Schooled belongs to YLAB's Blue String Universe, the shared world anchored by Lookism. For character purposes, the connection matters in one direction: Season 1 requires zero Lookism knowledge, and no BSU character walks into Na Hwajin's cases.
The crossover relevance arrives later. In Season 2 (which began in July 2023 in Korean and is still running, with episode 263 posted on October 11, 2026; the English WEBTOON edition is no longer available) and the crossover series The Great War, Na Hwajin appears as a key figure alongside characters from other YLAB titles. If you're reading for the universe connections, those are the entries where Get Schooled characters start interacting with the wider BSU roster. For Season 1, treat the shared world as background texture.
Manhwa characters vs the Netflix drama cast
Teach You a Lesson condensed the manhwa's case-by-case structure into a continuous 10-episode narrative, and the character adjustments follow from that choice.
Pyo Ji-hoon, Jin Ki-joo, Kim Moo-yul and Lee Sung-min in Teach You a Lesson. Still via Netflix Tudum (Netflix).
Na Hwajin (Kim Mu-yeol): the core stays intact: an inspector with a personal loss and consistent methods. Netflix gives him a background in a secretive military unit, and the serialized format gives him more connective tissue between cases than the manhwa's episodic structure allowed.
Bong Geun-dae (P.O): new for the drama. He doesn't exist in the webtoon; the show made him the bureau's deputy director, a tech specialist who goes undercover for the bureau, and the viewer's way in.
Choi Gang Seok (Lee Sung-min) and Im Han Rim (Jin Ki-joo): both elevated by prestige casting. In the drama Gang-seok is the minister of education who founded the bureau, and Han-rim is a former military operative, as she is in the webtoon. The bureau's internal politics get more screen time, which shifts the drama toward institutional thriller and away from pure case-of-the-week.
The drama's version of the bureau landed with viewers. Under an r/KDRAMA post about the show, one viewer wrote: "The characters are awesome specially Im Han-rim(Jin Ki-Joo). I really loved her, pure diva."
The adaptation drew criticism before it premiered: in July 2025, 65 teacher and civic groups asked Netflix to drop the project, objecting to a story where officials punish problem students with violence. The webtoon had its own controversy: in September 2023 Naver cancelled the English edition and suspended the Korean run over an episode criticized as racist, according to the Korea Herald. The Korean run resumed in January 2024.
Full breakdown of what the Netflix adaptation changed, kept, and softened:
Teach You a Lesson Netflix Guide →
For readers coming from the drama who want more school-setting manhwa with strong casts, our best school setting manhwa list covers where Get Schooled sits in the genre.
Related Reading
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- Get Schooled Manhwa Reading Guide: where to start, how the two seasons split, and why the English edition disappeared
- Get Schooled Manhwa Review -- 7.5/10, the full verdict on writing, art, and the ethics
- Teach You a Lesson Netflix Guide -- the adaptation, its cast, and what changed
- Lookism Review -- the Blue String Universe flagship, for readers chasing the shared world
- Best School Setting Manhwa -- where Get Schooled fits in the school-action field
- Manhwa Like Get Schooled: 8 Picks for Fans of Na Hwajin
Frequently Asked Questions
Who is the main character of Get Schooled?
Na Hwajin, an inspector for the fictional Educational Rights Protection Bureau. His fiancee Gayoon Choi was killed by a student, and that loss drives his work. Kim Mu-yeol plays him on Netflix.
Who is Bong Geun-dae in Get Schooled?
He isn't in the webtoon. The Netflix drama Teach You a Lesson created him: P.O plays the bureau's deputy director, a tech whiz who often goes undercover.
Who plays Na Hwajin in the Netflix drama?
Kim Mu-yeol, in Teach You a Lesson (Netflix, June 5, 2026), alongside Lee Sung-min, Jin Ki-joo, and P.O.
Who plays Bong Geun-dae in Teach You a Lesson?
P.O of Block B (Pyo Ji-hoon). The role was written for the drama, as the bureau's deputy director and tech specialist.
Is Get Schooled connected to Lookism?
Yes, both are YLAB Blue String Universe titles. Season 1 of Get Schooled stands alone; the connections matter in Season 2 and The Great War crossover.
Who is Gayoon Choi?
Na Hwajin's fiancee, killed by a student before the series begins. Her death is the stated reason he joined the EPRB.
Does Get Schooled have a large recurring cast?
No. AniList's character index for the webtoon lists six names: Na Hwajin, Im Han Rim, Choi Gang Seok, Se-Ra Gu, Joon-bin Lee, and Daniel Hyeon. Bong Geun-dae belongs to the drama. Every school case still brings its own single-case characters who don't return.
How We Checked This
On October 15, 2026 we checked this page's Bong Geun-dae section against Netflix's cast page on Tudum, Netflix's episode guide, Korean coverage of the June 5 press conference (Maeil Business, CBS NoCut News and SPOTV News via Daum) and AniList's character index for the webtoon. The old version said he first appears in the webtoon's Season 1 as a violent student; that was wrong, and he's a character created for the drama. We also corrected the Season 2 episode count (Naver's list API), removed an arc count no official source gives, and sourced the drama's episode count and the two controversies. The rest of the plot descriptions weren't re-read on this pass.
Last reviewed: October 15, 2026
References
- Get Schooled on AniList, including the official character index used for Se-Ra Gu, Joon-bin Lee, and Daniel Hyeon
- Gu Se-Ra on AniList, the separate spinoff manhwa built around Se-Ra Gu
- Get Schooled on Naver Webtoon, the Korean original and its episode list
- Teach You a Lesson cast and characters (Netflix Tudum)
- Teach You a Lesson on Netflix, the episode guide
- Pyo Ji-hoon on playing Bong Geun-dae (Maeil Business)
- Teach You a Lesson press conference (CBS NoCut News via Daum)
- Webtoon 'Get Schooled' canceled in US (Korea Herald)
