TIGHT

 (白夜のカフカ) is an idol group that debuted in November 2021.

Current Members

 * Tadase Nana (唯世夏凪) (Founding member)
 * Naruse Mikuri (成瀬みくり) (Joined March 2022)
 * Riria (リリア) (Joined March 2022)
 * Heri (妃理) (Joined September 2022)
 * Kanabe Natsuka (金戸なつか)

Former Members

 * Asukai Botan (飛鳥井ぼたん) (Joined March 2022; Left August 2022)
 * Meri (芽利) (Founding member; Graduated February 26, 2023)
 * Nishio Kaya (西尾華耶) (Founding member; Graduated February 26, 2023)