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K (Japanese singer)

Japanese singer, dancer and actor From Wikipedia, the free encyclopedia

Koga Yudai (古賀祐大), known by his stage name K (Japanese: ケイ, Korean: 케이, born October 21, 1997[1] in Tokyo[2]) is a Japanese singer, dancer, and actor. He debuted in 2022 as a member of the boy group &Team under YX Labels. Prior to his idol career, K was an elite competitive long-distance and ekiden runner.[3]

Born
古賀祐大(Koga Yudai)

(1997-10-21) October 21, 1997 (age 28)
Tokyo, Japan
Occupations
  • Singer
  • dancer
  • actor
Years active2020–present
Quick facts Background information, Born ...
K
K in 2026
K in 2026
Background information
Born
古賀祐大(Koga Yudai)

(1997-10-21) October 21, 1997 (age 28)
Tokyo, Japan
Occupations
  • Singer
  • dancer
  • actor
Years active2020–present
Websiteandteam-official.jp
Musical career
Genres
Labelyxlabels.com
Member of&Team
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Career

In 2017, K enrolled in the artist training school EXPG in Tokyo.[citation needed] In 2019, he participated under his birth name in the audition program Deep Vocalist Audition: Road to D, a program recruiting new members for the LDH Japan vocal group Deep [ja].[4][unreliable source?]

K studied[5] dance in Los Angeles, where he saw a BTS performance on TV and decided to join their agency Big Hit. In June 2020, K participated in the Mnet idol survival competition program I-Land, produced by Big Hit Entertainment (now Hybe) and CJ ENM.[6][better source needed] K was eliminated in the final episode of I-Land.[citation needed]

On January 1, 2021, it was announced that K had been selected as one of five confirmed members for the global debut project of Big Hit Entertainment Japan's (later Hybe Japan and YX Labels).[7] The other selected performers had also been eliminated from I-Land.[7] On April 26, K appeared in Enhypen's "Drunk-Dazed" music video as a character in the story of the Dark Moon universe.[citation needed]

From July to September 2022, K appeared in &Audition – The Howling –, the reality competition program to select members for Hybe's first Japanese group.[8][unreliable source?][9] K debuted as a member of &Team on December 7, 2022.[citation needed]

In the October 2023 episode of All-Star Thanksgiving, K won the mini marathon.[10][unreliable source?][11] In March 2024, K collaborated with hip-hop choreographer Riehata on a dance session sponsored by Toyota.[12] In the April 2024 episode of All-Star Thanksgiving, K took fourth place in the mini marathon;[13] in the October 2024 episode, he placed sixth. In May, he was a tournament supporter for Nippon Television's The Dance Day contest.[14] On July 6, 2024, K made his TV drama series debut in Take Me, I'm Yours, playing the role of a Grim Reaper. In August 2024, K appeared as an entertainment presenter on Mezamashi TV.[15] K was a season regular on Friday episodes of Love it! [ja] on TBS from October to December.[16] During Shanghai Fashion Week in October, K appeared at Moncler's "The City of Genius" event.[17][better source needed][18][better source needed][19]

In January 2025, K served as MC for TV Asahi's Our Emotional Heisei.[20] In May 2025, he became a brand ambassador for the South Korean skincare brand Sam'u.[21] From July to September, K was a season regular on Monday episodes of Love it! on TBS.[22] Also in September, K completed his nine-day duty as a TBS World Athletics supporter for the Tokyo 2025 World Athletics Championships,[23][24][25] where was praised for his insightful comments and passionate support.[26] On November 27, he was selected as one of Modelpress's Faces of 2025.[27]

On January 1, 2026, K was the official tournament supporter and commentator for TBS's New Year Ekiden 2026.[28] On April 6, K was an MC for Meryl Streep and Anne Hathaway's appearance at a promotional event for The Devil Wears Prada 2 in Tokyo.[29][better source needed][30] Also in 2026, K appeared in the live-action film Blue Lock in the role of Seishiro Nagi.[31][better source needed][32][better source needed]

K at the &TEAM showcase "Mark on Me" in Tokyo, September 21, 2026.

Artistry

K regularly contributes to choreography for &Team's stage performances, possessing the position of "performance leader" in the group.[33][34][35]

Choreography credits

More information Artist, Songs ...
Artist Songs Album / EP / Single
2023
&Team "Buzz Love" First Howling: ME
"Firework" First Howling: WE
"Really Crazy" First Howling: NOW
2024
&Team "Samidare" Yukiakari
"Big Suki" "Jyuugoya"
"Deer Hunter" Yukiakari
2025
&Team "Run Wild" "Go in Blind"
"Lunatic" Back to Life
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Personal life

He started playing football and track and field in elementary school and belonged to a strong high school team for ekiden (long-distance relay races). Although he had already been accepted to university, he decided to give up track and field and pursue a career as an artist.[36][unreliable source?]

Filmography

Film

Television series

Competition results

More information Year, Tournament name ...
Year Tournament name Event Result Ref
Ninoe Junior High School, Edogawa
2010 Tokyo Metropolitan Junior High School Regional Track and Field Championships Men 1500m 3rd place

(4 m 49.04 s)

[41][unreliable source?]
2011 Edogawa Junior High School Track and Field Championships 2nd place [42][unreliable source?]
2012 The 63rd Tokyo Metropolitan Junior High School Regional

Tournament - District Division

Men 3000m 7th place

(9 m 42.57 s)

[43]
The 58th All Japan Junior High School Track and Field

Championships Tokyo Metropolitan Tournament

Men 3000m

Men 1500m

32 place

(9 m 34.66 s) 36 place (4 m 25.19 s)

[44][45]
The 65th Tokyo Metropolitan Junior High School Ekiden Race _ Team 3d pl (1 h 1 m 11 s)

(Section 5: 10 m 07 s)

[46]
Ryutsu Keizai University Kashiwa High School
2015 Chiba Prefecture High School Athletic Meet Men 3000m steeplechase Qualifying: 9 m 39.49 s

Final: 15th place (10 m 12.50 s)

[47][48][unreliable source?]
The 57th Oga Ekiden Race _ 1st place in team competition

(2 h 08 m 27 s) (Section 2: 9 m 09 s)

[3][49][unreliable source?]
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References

Further reading

Related Articles

Timelines

Top Qs

Fact Checks