What does the "boy next door" concept actually mean?

It is a deliberate refusal of the usual high-concept approach. The songs are about ordinary situations — crushes, awkwardness, everyday disappointment — and the group calls its own work easy listening rather than a narrative universe.

How involved is Zico?

He founded KOZ Entertainment, the label behind the group, and announced the project in February 2023. The group also writes, with members credited across its releases.

What was the "First Love" trilogy?

The group's first three releases — the single album "Who!", and the EPs "Why.." and "How?" — were designed as one story about a first love, running from May 2023 to April 2024.

Where should a new listener start?

"Serenade" for the debut, "Earth, Wind & Fire" for the song that widened the audience, and the album "HOME" for the fullest version of the sound.

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BOYNEXTDOOR

Members

Fandom

ONEDOOR

AgencyKOZ EntertainmentDebutMay 2023GenreK-pop

Zico's easy-listening six, whose whole concept is not having one.

Easy listening
Everyday lyrics
Zico-produced
Hip-hop roots
Unforced

LINEUP

Members

Sungho

Main vocalist

Riwoo

Main dancer

Jaehyun

Leader

Taesan

Rapper

Leehan

Vocalist

Woonhak

Maknae

BOYNEXTDOOR members: positions, birthdays and ages
Member	Position	Birthday	Age	Height	Born in
Sungho	Main vocalist	Sep 4, 2003	23	173 cm	South Korea
Riwoo	Main dancer	Oct 22, 2003	23	170 cm	South Korea
Jaehyun	Leader	Dec 4, 2003	22	177 cm	South Korea
Taesan	—	Aug 10, 2004	22	182 cm	South Korea
Leehan	—	Oct 20, 2004	22	180 cm	South Korea
Woonhak	Maknae	Nov 29, 2006	19	182 cm	South Korea

MILESTONES

Records & firsts

1.16 million first-week sales for "No Genre"

May 2025; the EP debuted at number one on the Circle Album Chart.

First Circle Album Chart number one with "How?"

Chart issue dated April 20, 2024.

"19.99" passed one million copies

October 25, 2024, by YG Plus figures.

First Billboard 200 entry with the EP "Why.."

It charted at number 162 in 2023.

Global Rising Artist, 2023 Melon Music Awards

Seven months after debut.

DID YOU KNOW

Trivia & lore

The name is the concept: the group writes about ordinary daily life rather than high-concept fantasy, and calls its own work easy listening.
KOZ Entertainment was founded by rapper Zico, who announced plans for the group in February 2023.
The six members were introduced on May 14, 2023 through a series of GIFs posted across the group's social accounts.
The fandom name ONEDOOR was announced on November 1, 2023.
The first three releases were built as a "First Love" trilogy rather than standalone comebacks.

DISCOGRAPHY

Signature tracks

Earth, Wind & Fire — How?

2024 · First Love trilogy

Serenade — Who!

2023 · First Love trilogy

I Feel Good — No Genre

2025 · No Genre

If I Say, I Love You — No Genre

2025 · No Genre

Nice Guy — 19.99

2024 · 19.99 and the first tour

TIMELINE

The journey

ORIGIN

Zico builds a label

2019 — 2023

Zico founded KOZ Entertainment in January 2019, and HYBE acquired it the following year. In February 2023 he announced plans for its first boy group, and the six members were introduced on May 14 that year through a run of GIFs across the group's social accounts.

DEBUT

First Love trilogy

2023 — 2024

The single album "Who!" (May 2023), the EP "Why.." and the EP "How?" (April 2024) were built as one story about a first love. "Why.." gave the group its first Billboard 200 entry, and "How?", led by "Earth, Wind & Fire", became its first number one on the Circle Album Chart.

Anchor track: Earth, Wind & Fire

BREAKTHROUGH

19.99 and the first tour

2024 — 2025

"19.99" arrived in September 2024 with "Nice Guy" and passed a million copies within weeks. The Knock On Vol.1 world tour opened in Incheon that December, and the group settled into what it calls easy listening — songs about ordinary situations rather than fantasy concepts.

Anchor track: Nice Guy

No Genre

2025 — 2025

The fourth EP "No Genre" sold 1.16 million copies in its first week in May 2025, and "The Action" followed in October with "Hollywood Action", widening the sound while keeping the plain-spoken writing that had become the group's signature.

Anchor track: I Feel Good

HOME

2026

The first full studio album, "HOME", came on June 8, 2026 with "Ddok Ddok Ddok" and "Viral", and a deluxe edition led by "Animal" followed in September — the point at which the catalogue stopped being a run of EPs and single albums.

FAQ