Koga Yudai (古賀 祐大; born October 21, 1997), known professionally as K (ケイ; 케이), is a Japanese singer and choreographer under HYBE Labels Japan. He is a member of the boy group &TEAM.
Inkigayo
Series • 1998
DayDay.
Series • 2023
Blue Lock
Movie • 2026
IDOL 1N2D
Series • 2022
Honey Lemon Soda
Series • 2025
Idol Human Theater
Series • 2021
I-LAND
Series • 2020
Hong Seok-cheon's Jewelry Box
Night Brunch
The Silence Of IDOL
Venue101
&Audition - The Howling
Wolf Boy Lie or Truth
Series • 2004
MAEJEOMGAYO
Hirunandesu!
Series • 2011
with MUSIC
Series • 2024
Idol's Physical Race
The Breakthrough Files
Series • 2018
Sore Snow Man ni Yarasete kudasai
ALL!Light! &TEAM
Go ONE!!! MEET & LINK
SUMBAKKOKJIL 2
Series • 2026
Phone A Fangirl
&TEAM COURSE
Mezamashi TV
Series • 2019
&TEAM vs FANTASTICS
&TEAM CLUB
&TEAM Gakuen
&TEAM 100 Days Journey ~Howling out to the World~
TOKYO023