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 with confirmed plot roles, and three more named supporting characters confirmed on AniList without translated bios yet
- Bong Geun-dae drives the most search interest, boosted by P.O's Netflix casting
- One confirmed supporting character, Se-Ra Gu, headlines her own separate spinoff manhwa
- 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
Advertisement
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 a KAIST engineering graduate serving as the EPRB's deputy director and cyber/tech investigator -- he dismantles cyberbullying rings and runs the bureau's digital casework rather than doing frontline enforcement, and because he's 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: 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 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 a handful of constants around Na Hwajin.
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 in Korean and still updating weekly, past chapter 266 as of September 2026, though not officially translated into English) 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
Advertisement
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 current English-availability 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. Across official sources, the confirmed named roster is seven: Na Hwajin, Bong Geun-dae, Choi Gang Seok, Im Han Rim, Se-Ra Gu, Joon-bin Lee, and Daniel Hyeon. Every school arc still brings its own single-case characters who don't return.
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 characters on Blue String Universe Wiki
- Teach You a Lesson cast and characters (Netflix Tudum)
- Netflix cast announcement (Anime News Network)
