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ChapterBrief · Manhwa
Get Schooled Characters: Na Hwajin, Bong Geun-dae Cast
Get Schooled characters ranked by role: Na Hwajin the EPRB inspector, Bong Geun-dae the breakout P.O plays on Netflix, and the full manhwa cast.
8 min readBy Sophie Laurent
Get Schooled characters break the usual manhwa pattern: there is no growing ensemble, no power-ranked roster, no ally-of-the-week system. The cast is deliberately small, and two names carry most of the search traffic -- Na Hwajin, the inspector at the center, and Bong Geun-dae, the early-season character Korean readers search for by name. This guide covers both in depth, plus the EPRB figures around them and how the Netflix drama recast the whole roster.
TL;DR: Get Schooled characters are built around a deliberately thin recurring cast: inspector Na Hwajin, the breakout Bong Geun-dae, and EPRB figures Choi Gang Seok and Im Han Rim. Everyone else rotates per school arc. The Netflix drama Teach You a Lesson (June 2026) casts Kim Mu-yeol, P.O, Lee Sung-min, and Jin Ki-joo in those four roles.
Official trailer for Teach You a Lesson, the Netflix drama adaptation of Get Schooled.
Get Schooled characters: key takeaways
- Recurring cast is intentionally minimal: Na Hwajin plus three EPRB-adjacent figures
- Bong Geun-dae drives the most search interest, boosted by P.O's Netflix casting
- Each of Season 1's 14 school arcs brings its own one-case cast that doesn't return
- Na Hwajin's fiancee Gayoon Choi died before the story starts; her death is his engine
- The series is Blue String Universe (Lookism's world), but Season 1 stands alone
- Netflix's Teach You a Lesson (June 5, 2026) adapts the roster with notable role changes
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.
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 the full arc-by-arc breakdown of all 14 school cases Na Hwajin works through:
Get Schooled Manhwa Reading Guide →
Bong Geun-dae: the character readers search for most
If you found this page by searching "bong geun dae," you are in the majority. Bong Geun-dae (봉근대) generates more search volume than any other name in the series, including the protagonist, and the reasons are worth spelling out.
In the manhwa, Bong Geun-dae appears early in Season 1. His first appearance puts him in the antagonist slot: a violent student case that Na Hwajin is assigned to handle. That framing doesn't hold. His role develops more complexity across multiple episodes than his introduction suggests, and his dynamic with Na Hwajin becomes one of the more interesting recurring threads in a series that mostly avoids recurring threads. Where every school-arc character vanishes after their case closes, Bong Geun-dae keeps coming back.
The search spike has a second driver: casting. P.O of Block B (Pyo Ji-hoon) plays Bong Geun-dae in the Netflix adaptation Teach You a Lesson, which premiered June 5, 2026. The drama reworks the character noticeably. On screen, Bong Geun-dae is the EPRB's deputy director and resident tech specialist, and because he is small and reads as non-threatening, he keeps getting sent undercover disguised as a student to assess how bad a school's violence problem actually is. It's a role built for comic relief and infiltration plots in a way the manhwa version wasn't.
There is also a translation artifact working here. The Korean title 참교육 doesn't map to an obvious English query, so Korean readers who knew the character before the English title spread searched "bong geun dae manhwa" instead. The name became a de facto entry point for the entire series, which is why so many people search for the character before they can name the manhwa itself.
The supporting cast: Choi Gang Seok, Im Han Rim, and the EPRB
The rest of the recurring Get Schooled characters sit inside the bureau's structure, and both are more institutional anchor than fleshed-out ally.
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.
Im Han Rim operates as the counterpoint inside the organizational frame. Where Na Hwajin embodies the bureau's premise that force can correct what persuasion can't, Im Han Rim's presence keeps the opposite question open: whether the bureau's approach is the only one that works, or just the only one that gets fast results. Jin Ki-joo takes the role on screen.
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.
How Get Schooled characters map to the 14 school cases
Season 1 runs 111 episodes across 14 arcs, and the character design follows the case structure. Each arc 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 arc is figuring out which tier is actually which, because the series' better cases scramble them.
The early arcs keep those tiers legible while the reader calibrates what the series considers acceptable force. The middle arcs, roughly 5 through 9, 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. The final arcs pull characters from earlier cases into a larger converging conflict, the one place Season 1 lets its per-arc casts overlap.
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 four constants.
The Blue String Universe connection
Get Schooled is the sixth webtoon in 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 (launched July 2023, currently on hiatus) 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 omnibus structure into a continuous 10-episode narrative, and the character adjustments follow from that choice.
Na Hwajin (Kim Mu-yeol): the core stays intact -- EPRB inspector, personal loss, consistent methods. The serialized format gives him more connective tissue between cases than the manhwa's episodic structure allowed.
Bong Geun-dae (P.O): the biggest rework. The drama makes him EPRB staff from the start, a deputy director and tech specialist who infiltrates schools disguised as a student. The manhwa introduced him from the student side of the line. Same name, noticeably different function.
Choi Gang Seok (Lee Sung-min) and Im Han Rim (Jin Ki-joo): both elevated by prestige casting. The bureau's internal politics get more screen time than the manhwa gave them, which shifts the drama toward institutional thriller and away from pure case-of-the-week.
The adaptation also drew criticism from Korean educators' unions who argued the premise glorified corporal punishment, a controversy the manhwa navigated in quieter form across its run.
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
- Get Schooled Manhwa Reading Guide -- all 14 arcs, reading order, and the Season 2 hiatus situation
- 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?
The series' most-searched character. He appears early in Season 1, first framed as a violent student case, and his role grows well past that across multiple arcs. P.O plays him in the Netflix drama as the EPRB's deputy director who goes undercover as a student.
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 drama version works inside the bureau as 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. The recurring roster is essentially four names; every school arc brings its own single-case characters.
References
About the author
Critical Theorist & Features Writer
Manhwa and webcomic critic with a background in literary analysis. Writing about narrative and genre since 2016. Specialises in genre history and story structure.
- Manhwa and webcomic critic since 2016
- Graduate background in comparative literature
- Published criticism covering Korean and Japanese comics
- Specializes in genre lineage and narrative structure
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