2nd generation · Can&J's Entertainment / Tunes-Will Entertainment

F.CUZ

フォーカズ / 포커즈

F.CUZ debuted in 2010 as four — Jinon, LeeU, Kan and Yejun — and the line-up shifted more than once before the Japanese work began.

  • 2010DebutJan 8, 2010
  • 5Members
  • 2thGeneration
  • FOR UFandom
No One / Official MV

Last updated:

01

In 30 seconds: F.CUZ

The bright early singles give way to harder dance material, and Midnight Sun onward sounds noticeably older.

Come here if you are filling in the late second generation and want a group that kept working after the first line-up broke.

02

Key facts

Group name
F.CUZ
Reading / Hangul
フォーカズ / 포커즈
Company
Can&J's Entertainment / Tunes-Will Entertainment
Debut date
January 8, 2010
Days active
6,096 days (16 years, 8 months)
Debut song
Jiggy
Generation
2nd generation
Fandom name
FOR U(フォーユー)
03

Member guide

Profile comparison

MembersBirth dateBlood typeMBTINationality
ジノン1989-07-1337183cmBNot disclosedSouth Korea
カン1991-09-3034184cmBNot disclosedSouth Korea
イェジュン1992-02-0434182cmBNot disclosedSouth Korea
テゴン1990-10-2735180cmANot disclosedSouth Korea
レヒョン1991-06-0835178cmONot disclosedSouth Korea
イユ1990-03-2036179cmANot disclosedSouth Korea

Ages are as of 2026-09-17.

Selected releases

04

Start here

Follow a few songs from the starting point to the group's current sound.

View all official videos →View in Japanese
05

From debut to now

  • 2010
    Arrived as the four of Jinon, LeeU, Kan and Yejun, joining the mid-tier boy groups of the later second generation with bright dance songs.
  • 2011
    The departure of LeeU, the early main vocal, changed how the group read and pointed towards the next line-up of five.
  • 2012
    They returned as five with Daegeon and Raehyun, making the entrance after the rebuild that leads to No.1, Midnight Sun and Dreaming i.
  • 2013
    Releases and events in Japan grew, and the group came to be followed from the Japanese fan community as well as the Korean catalogue.
  • 2014
    Cha-Ga-Wa, around Bargaining for Love, left official footage from the later period and moved to a matured presentation unlike the early days.
  • 2023
    News of the members and talk of a reunion make F.CUZ a way back into the mid-tier boy groups of the later second generation.
06

Key achievements

Key milestones

2010Jiggy and No One form the early signature songsA bright debut image and a harder dance song side by side became the two pillars for remembering early F.CUZ.
2012For Century Ultimate Zest arrives with five membersHolding up No.1 after the rebuild, it set out a group unlike the original four.
2013Work in Japan secures a separate routeJapanese editions and events left a route for fans that the Korean catalogue alone does not pick up.
2014Cha-Ga-Wa adds a later official music videoAs signature footage from the later period, it closes the run for anyone following F.CUZ after the rebuild.
10

Official links

Official site

Official social accounts and platforms

Shopping guide

Verified English shopping links are not yet available.

12

KPOP DISCOVER's F.CUZ note

F.CUZ debuted on January 8, 2010 as the four of Jinon, LeeU, Kan and Yejun. The debut song Jiggy is a bright dance track that cut their name into the mid-tier boy groups of the later second generation. No One and Gorgeous followed the same year, stacking up the performing of the original four in a short stretch. When LeeU, the main vocal, left in 2011 the outline of the group changed a great deal, and in 2012 it was rebuilt as five with Daegeon and Raehyun added. That change of line-up, under Can&J's Entertainment and Tunes-Will Entertainment, is exactly why F.CUZ cannot be described by a single debut song.

Choosing No One as the entrance gives the clearest view. After the sharp early dance song pulls you in, the return song No.1 with five members shows the moment the group changed, and Midnight Sun from 2012 lands on the grown-up expression after the rebuild. Line those three up and it becomes clear how differently F.CUZ reads either side of the change. Carrying on to Dreaming i also covers the sound once the five-member line-up had settled in 2012. A catalogue mixing brightness with maturity is built so that starting from the early dance pop still opens another entrance partway through.

From 2013 the routes through Japanese releases and events grew stronger, and a Japanese catalogue carrying LUV HOLIC showed a face apart from the Korean side. Cha-Ga-Wa, on Bargaining for Love in 2014, left the matured finish of the later period and the sense of a run heading into its second half. In 2023 news of the members and talk of a reunion reached beyond the old fans, and F.CUZ was confirmed again as a way back into the mid-tier boy groups of the later second generation. Jiggy, then Midnight Sun, then Cha-Ga-Wa covers the brightness of the debut, the maturity after the rebuild and the finish of the later period.

Editors' take Jiggy / Midnight Sun / Cha-Ga-Wa — three songs cross a change of line-up in a five-piece from Can&J's Entertainment.

13

Japan activity score

KPOP DISCOVER original metric
No. 103/ 210 groups

No. 103 of 210 groups with recorded activity in Japan (top 49%)

  • 2Japanese releases
  • 7Japan-related tracks
  • 0Members from Japan
  • 1Official Japanese accounts

The denominator is the 210 groups, out of 525 covered by KPOP DISCOVER, whose raw score reaches at least one point. The score adds 10 points per Japanese-market release, 3 per Japan-related track, 12 per member from Japan, and 8 per official Japanese account. Japanese-market releases carry the most weight because they are the most direct evidence of activity; related tracks add track-level detail; members from Japan stand for Japanese-language communication and continuity; official accounts stand for a permanent point of contact. The weights are an editorial judgement, not a statistical optimisation, and the ranking tracks release volume in Japan closely. Source: releases, tracks, members, and official links recorded by KPOP DISCOVER (updated 2026-09-17).

How this score is calculated →View in Japanese

Frequently asked questions

What defines F.CUZ?
The bright early singles give way to harder dance material, and Midnight Sun onward sounds noticeably older.
Why should a new listener start with F.CUZ?
Come here if you are filling in the late second generation and want a group that kept working after the first line-up broke.
Which songs should a new listener try first?
Start with No One, Midnight Sun, then continue to the official video index.