K (Japanese singer)

K
Background information
Born
古賀祐大（Koga Yudai）

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

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]

Career

In 2017, K enrolled in the artist training school EXPG in Tokyo. 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.[4]

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] K was eliminated in the final episode of I-Land.

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.

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][9] K debuted as a member of &Team on December 7, 2022.

In the October 2023 episode of All-Star Thanksgiving, K won the mini marathon.[10][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! on TBS from October to December.[16] During Shanghai Fashion Week in October, K appeared at Moncler's "The City of Genius" event.[17][18][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][30] Also in 2026, K appeared in the live-action film Blue Lock in the role of Seishiro Nagi.[31][32]

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

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

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]

Filmography

Film

Television series

Competition results

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]
2011 Edogawa Junior High School Track and Field Championships 2nd place [42]
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]
The 57th Oga Ekiden Race _ 1st place in team competition

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

 [3][49]

References

  1. ↑ ＆TEAM（エンティーム）のメンバープロフィール＆ビジュアルを解説！ 日本発のグローバルグループに注目. Elle (in Japanese). April 21, 2026. Archived from the original on May 2, 2026. Retrieved August 11, 2026.
  2. ↑ ＆TEAM・Kが飛躍の一年を振り返る 悲願の初出場決めた紅白歌合戦は「織田裕二さんに見ていただきたい」 世界陸上での共演が刺激に ：中日スポーツ・東京中日スポーツ. 中日スポーツ・東京中日スポーツ (in Japanese). Archived from the original on August 11, 2026. Retrieved August 11, 2026.
  3. 1 2 ７月4日に行われました！ 第57回男鹿駅伝競走大会に本学校が出場致しました！ (in Japanese). Retrieved May 5, 2026 – via Facebook.
  4. ↑ ROAD TO D〜夢への軌跡〜 (in Japanese). Archived from the original on February 27, 2023. Retrieved May 4, 2026 – via YouTube.
  5. ↑ 2025年一発目の脱出島は相棒対決!&TEAMのFUMA & Kが脱出島に初参戦!『冒険少年 新春脱出島SP』｜TBSテレビ. TBS Topics (in Japanese). Archived from the original on May 22, 2025. Retrieved June 8, 2026.
  6. ↑ "APPLICANT PROFILE K" (in Korean). Retrieved May 5, 2026 – via X.
  7. 1 2 日本発のBTS弟分グループ結成へ 『I-LAND』出身のK、TAKIがメンバーに. ORICON NEWS (in Japanese). Archived from the original on January 9, 2021. Retrieved May 10, 2026.
  8. ↑ "'&AUDITION - The Howling -' hosted by HYBE LABELS JAPAN has been confirmed to air in July this year". allkpop. Archived from the original on March 9, 2022. Retrieved March 9, 2022.
  9. ↑ HYBE LABELS (July 8, 2022). &AUDITION - The Howling - Episode1. Archived from the original on April 23, 2026. Retrieved May 8, 2026 – via YouTube.
  10. ↑ "&TEAM's K Secures Victory in Akasaka Mini-Marathon at All-Star Thanksgiving '23 Autumn Festival!". tokyohive. Archived from the original on May 24, 2024. Retrieved May 6, 2026.
  11. ↑ 【オールスター感謝祭】&TEAM・K、初の赤坂5丁目ミニマラソンで優勝「応援のおかげです」 8年ぶりマラソンも笑顔＆ファンに神対応. オリコンニュース（ORICON NEWS）. October 14, 2023. Archived from the original on October 20, 2023. Retrieved May 6, 2026.
  12. ↑ MIURA, MAKI (March 22, 2024). &TEAMのKがRIEHATAとのセッション、ダンスに懸ける思いを語る. Vogue Japan (in Japanese). Archived from the original on May 18, 2026. Retrieved May 5, 2026.
  13. ↑ 【オールスター感謝祭】「赤坂5丁目ミニマラソン」&TEAM・Kは連覇ならずも激走 原晋監督が秘話. オリコンニュース（ORICON NEWS）. Archived from the original on May 19, 2026. Retrieved May 6, 2026.
  14. ↑ 「THE DANCE DAY」でSKY-HI、&TEAMのK、高橋海人、ビーファSOTA、ME:IのRANらがコラボ. 音楽ナタリー (in Japanese). Archived from the original on May 17, 2026. Retrieved May 6, 2026.
  15. ↑ &TEAMのK「めざまし」エンタメプレゼンター就任、心配は滑舌「カミカミのKと言われないように」（コメントあり）. 音楽ナタリー (in Japanese). Archived from the original on February 10, 2026. Retrieved May 6, 2026.
  16. ↑ イザ！編集部 (October 11, 2024). ＆TEAMのK、激痛足つぼに悶絶！ ファン爆笑「事務所に言いますよw」「いっちばん怖いからw」 TBS「ラヴィット！」. イザ！ (in Japanese). Archived from the original on April 10, 2025. Retrieved May 6, 2026.
  17. ↑ "Instagram". www.instagram.com. Retrieved May 6, 2026.
  18. ↑ "Instagram". www.instagram.com. Retrieved May 6, 2026.
  19. ↑ Kotsoni, Elektra (October 20, 2024). "'The Genius for Asia': Moncler soars in Shanghai". Vogue. Archived from the original on May 18, 2026. Retrieved May 6, 2026.
  20. ↑ テレ朝深夜枠で3つの新番組 青山テルマ＆K、霜降りせいや、エバースがそれぞれMCに. オリコンニュース（ORICON NEWS）. Archived from the original on May 18, 2026. Retrieved May 6, 2026.
  21. ↑ &TEAM・K、初の単独ブランドアンバサダー就任「とても光栄」 "誠実な姿勢や自然体の魅力"が起用理由【コメント全文】. オリコンニュース（ORICON NEWS）. Archived from the original on May 18, 2026. Retrieved May 6, 2026.
  22. ↑ &TEAM・K、超ときめき♡宣伝部、INI松田迅＆佐野雄大が「ラヴィット！」レギュラーに. 音楽ナタリー (in Japanese). Archived from the original on June 10, 2026. Retrieved May 10, 2026.
  23. ↑ Admin, Archive (May 22, 2025). "Yahoo Japan interview". AndTeamArchive.com. Archived from the original on May 17, 2026. Retrieved May 5, 2026.
  24. ↑ Admin, Archive (September 13, 2025). "World Athletics Championships". AndTeamArchive.com. Archived from the original on May 17, 2026. Retrieved May 5, 2026.
  25. ↑ &TEAM・K、TBS「世界陸上」応援サポーターに就任！選手経験を生かし熱気届ける. 推し楽 (in Japanese). Archived from the original on September 21, 2025. Retrieved May 6, 2026.
  26. ↑ 陸上経験×圧倒的ビジュアルで話題！&TEAM Kが花束を抱えて『東京2025世界陸上』9日間完走を報告し「ファンになりました」の声多数. THE FIRST TIMES (in Japanese). Archived from the original on May 19, 2026. Retrieved May 5, 2026.
  27. ↑ 2025年「今年の顔」大森元貴・吉沢亮...全14組は - モデルプレス. モデルプレス - ライフスタイル・ファッションエンタメニュース (in Japanese). November 27, 2025. Archived from the original on May 17, 2026. Retrieved May 5, 2026.
  28. ↑ &TEAMのKが「ニューイヤー駅伝」のTBS記念大会サポーターに就任！東京世界陸上に続き「緊張感や熱気を精一杯お届けします」. TBS NEWS DIG (in Japanese). December 26, 2025. Archived from the original on May 18, 2026. Retrieved May 6, 2026.
  29. ↑ "Instagram". www.instagram.com. Retrieved May 6, 2026.
  30. ↑ "&TEAM K: Meryl Streep and Anne Hathaway share their struggles at Tokyo event". Mantan Web. April 6, 2026. Archived from the original on August 11, 2026. Retrieved August 11, 2026.
  31. ↑ "&TEAM OFFICIAL (@andTEAMofficial) on X". April 14, 2026. Retrieved August 23, 2026 – via X.
  32. ↑ 映画『ブルーロック』公式 (@BLUELOCK_MOVIE) on X. April 14, 2026. Retrieved August 23, 2026 – via X.
  33. ↑ &TEAM、「FIREWORK」MV公開 振り付けの一部にはメンバーKも参加. オリコンニュース（ORICON NEWS）. Archived from the original on May 18, 2026. Retrieved May 5, 2026.
  34. ↑ &TEAM「We on Fire」MV公開 全員でのアクション初挑戦＆ラストコーラス部分はKが振付. オリコンニュース（ORICON NEWS）. Archived from the original on May 18, 2026. Retrieved May 5, 2026.
  35. ↑ &TEAM、Kが振り付けた「Big好き (suki)」メンバープロデュースのスペシャルビデオ公開 | Daily News. Billboard JAPAN (in Japanese). Archived from the original on May 18, 2026. Retrieved May 5, 2026.
  36. ↑ 遅咲き25歳芸能デビュー「じつは苦労人だった」世界陸上で話題の元陸上部アイドル"&TEAM・K"とは何者か？「強豪駅伝部」「織田裕二に負けない陸上愛」（布施京子）. Number Web - ナンバー (in Japanese). Archived from the original on May 19, 2026. Retrieved May 5, 2026.
  37. ↑ 実写映画『ブルーロック』凪誠士郎役は&TEAM・K ビジュアル公開. オリコンニュース（ORICON NEWS）. April 14, 2026. Archived from the original on June 9, 2026. Retrieved May 5, 2026.
  38. ↑ &TEAM・K、ドラマ初出演で"死神"役「私をもらって」予告映像解禁 - モデルプレス. モデルプレス - ライフスタイル・ファッションエンタメニュース (in Japanese). May 30, 2024. Archived from the original on May 18, 2026. Retrieved May 5, 2026.
  39. ↑ K（&TEAM）が華麗に舞う！前田公輝＆久保田紗友W主演ドラマ『私をもらって～恋路編～』本編映像公開. THE FIRST TIMES (in Japanese). Archived from the original on May 17, 2026. Retrieved May 5, 2026.
  40. ↑ K（&TEAM）演じる"死神"の儚げな表情も！ドラマ『私をもらって ～出逢編～』PR映像＆場面写真公開. THE FIRST TIMES (in Japanese). Archived from the original on January 16, 2025. Retrieved May 5, 2026.
  41. ↑ 【&TEAM】Kの高校時代や中学での陸上の成績は？ダンス歴もスゴい. スキマ時間のお供に (in Japanese). February 9, 2026. Archived from the original on May 21, 2026. Retrieved May 6, 2026.
  42. ↑ &TEAMのK（ケイ）は陸上選手？古賀祐大の出身高校や記録について調査！. ためかつブログ (in Japanese). September 21, 2025. Archived from the original on May 19, 2026. Retrieved May 6, 2026.
  43. ↑ 男子区部東部共通 ３０００ｍ ﾀｲﾑﾚｰｽ総合結果. www.jaaf.info (in Korean). Archived from the original on May 18, 2026. Retrieved May 6, 2026.
  44. ↑ 男子共通 ３０００ｍ ﾀｲﾑﾚｰｽ総合結果. www.jaaf.info (in Korean). Archived from the original on May 18, 2026. Retrieved May 6, 2026.
  45. ↑ 男子共通 １５００ｍ ﾀｲﾑﾚｰｽ総合結果. www.jaaf.info (in Korean). Archived from the original on May 18, 2026. Retrieved May 6, 2026.
  46. ↑ 第６５回（男子）東京都中学校駅伝競走大会成績 (PDF). Archived (PDF) from the original on May 19, 2026. Retrieved May 6, 2026.
  47. ↑ 先日行われました高校総體千葉県予選！. Retrieved January 2, 2026 – via Facebook.
  48. ↑ yuko080305. 高校時代に千葉の流通経済大柏で、三障で県総体でも決勝行けるぐらいちゃんとした、9分39秒のタイム出してる選手じゃん. Archived from the original on January 6, 2026. Retrieved January 2, 2026 – via X.{{cite web}}: CS1 maint: numeric names: authors list (link)
  49. ↑ 佐久長聖高校駅伝部応援班 平成27年度男鹿駅伝. tyouseiekidenouen.blog.fc2.com (in Korean). Archived from the original on May 18, 2026. Retrieved May 5, 2026.

Further reading

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