BOYNEXTDOOR Explained: Members, Ages & the KOZ Story Behind Zico's Group
Born in Seoul, living abroad. I read the Korean articles so you don’t have to. — Jamie K
If you’ve wandered anywhere near K-pop in the last couple of years, you’ve almost certainly heard BOYNEXTDOOR without knowing it — that impossibly catchy, slightly goofy, deeply singable sound is theirs. They’re a six-member group under KOZ Entertainment, the HYBE label founded by rapper Zico, and since debuting in 2023 they’ve built one of the most reliable hit rates in fifth-generation K-pop on a deceptively simple idea: songs about ordinary life, made ridiculously well. With their first full album now getting a September 28 repackage, here’s who they are and why they matter.
▲ BOYNEXTDOOR ‘Earth, Wind & Fire’ Official MV — © HYBE LABELS
Who Are BOYNEXTDOOR?
BOYNEXTDOOR (보이넥스트도어) are Sungho, Riwoo, Jaehyun, Taesan, Leehan, and Woonhak — six members under KOZ Entertainment, a label inside HYBE. They debuted on May 30, 2023 with the single album WHO!, and did something rookies rarely do: promoted all three of its tracks as singles at once. The name is exactly what it sounds like — the “boys next door,” approachable guys singing honest, relatable stories about everyday life. Their fandom is ONEDOOR (원도어).
The thing that keeps them from blending into the debut pile is how much of it is theirs. Several members write and produce, and the group has leaned into a lane most idol acts avoid: not fantasy, not concept-heavy world-building, but the small, specific texture of being young in Korea — crushes, breakups, part-time jobs, the dread of turning twenty.
The Members
Sungho (23) — vocalist with a clean, gentle tone and the group’s steady, dependable presence.
Riwoo (23) — main dancer, famously quiet offstage and razor-sharp on it.
Jaehyun (23) — rapper-vocalist and a natural on variety shows; in Korea he’s promoted under his full name, Myung Jaehyun (명재현), and he’s one of the group’s writers.
Taesan (22) — rapper and one of BOYNEXTDOOR’s core songwriters and producers.
Leehan (22) — vocalist who took a health-related hiatus in 2024 and returned to the group.
Woonhak (20) — the maknae, an energetic vocalist-dancer who anchors the youngest edge of the group.
The Zico Factor: Why KOZ Matters
Here’s the part international coverage tends to underplay. KOZ Entertainment was founded by Zico (지코) — the Block B leader who is, full stop, one of the most respected idol-rappers and producers Korea has ever produced (his solo track “Any Song” was a nationwide phenomenon). So when Koreans hear “the group Zico built,” it isn’t marketing fluff; it signals real hip-hop pedigree and a certain production standard. BOYNEXTDOOR inherited both — the self-writing instinct and the sense that the songs are engineered to actually stick.
Debut to Now: The Rise
After WHO! came a fast, confident run. The EP Why.. arrived in September 2023, then 2024’s How? delivered their breakout, “Earth, Wind & Fire” — a genuine domestic phenomenon that fans and Korean media alike shortened to 얼윗파. The EP 19.99 followed that September, a coming-of-age record the members helped write about the anxieties of not-quite-being-twenty. Momentum only compounded: 2025’s “If I Say, I Love You” took a Digital Song Bonsang at the 2026 Golden Disc Awards, and in February 2026 they were named Artists of the Year at the Hanteo Music Awards. Their first full-length album, Home, landed June 8, 2026, and their first world tour, Knock On Vol.2, packed Seoul’s KSPO DOME (31,800-plus over three nights), Busan, and a Japan leg.
What’s Next
The near-term headline is a repackage of Home, arriving September 28, 2026 — new tracks bolted onto their first full album, timed to keep the era running through the back half of the year. Around it: the Knock On Vol.2 world tour continues into 2027, and a first Japanese single, “HIGH BEAM,” is set for late September. For a group that’s grown with almost every comeback, the repackage is less a victory lap than another rung.
- Group: BOYNEXTDOOR (보이넥스트도어)
- Members: Sungho, Riwoo, Jaehyun, Taesan, Leehan, Woonhak (6)
- Debut: May 30, 2023 — “WHO!”
- Label: KOZ Entertainment (HYBE)
- Fandom: ONEDOOR
- Signature song: Earth, Wind & Fire
- Latest: Home (2026) → repackage September 28, 2026
- Name meaning: the “boys next door”
Frequently Asked Questions
Who are the members of BOYNEXTDOOR?
Six: Sungho, Riwoo, Jaehyun, Taesan, Leehan, and Woonhak, all under KOZ Entertainment (HYBE).
What does the name mean?
They’re the “boys next door” — approachable guys singing relatable, everyday stories.
Which label are they under?
KOZ Entertainment, founded by rapper Zico, a subsidiary of HYBE.
What’s their biggest song?
“Earth, Wind & Fire” (2024) is their signature breakout, though “If I Say, I Love You” earned a Golden Disc Digital Bonsang.
When’s the next comeback?
A repackage of their first full album Home on September 28, 2026.
“Relatable” gets thrown around as faint praise, but BOYNEXTDOOR turned it into a strategy — and it’s harder than it looks. Writing a song about a convenience-store run that a stadium can scream back at you takes real craft, and the fact that they keep doing it, release after release, is the whole story. No gimmick, no reinvention every era, just very good songs about very normal life. In a genre that often reaches for the epic, that’s its own kind of flex.
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