4:tune

 is a male idol group that debuted on September 9, 2021.

Current Members

 * Naoki (なおき; ) (Founding member)
 * Rion (りおん; ) (Founding member; Graduating April 17, 2023)
 * Izumi (いずみ; ) (Joined January 9, 2023)
 * Touma (とうま; ) (Founding member)
 * Haru (はる; ) (Joined March 20, 2023)
 * Tsubasa (つばさ; ) (Joined April 2023)
 * Yuki (ゆき; ) (Joined April 2023)

Former Members

 * Fumiya (ふみや; ) (Founding member; Left September 2021)
 * Mizuki (みずき; ) (Joined May 2022; Graduated January 27, 2023)
 * Sakuragi Kakeru (櫻木翔; ) (Support Member)
 * Ayato (あやと; ) (Support Member)
 * Kanato (かなと; ) (Founding member; Graduated April 11, 2023)

Digital Albums

 * 1) [2022.05.16] UNTITLED

Digital Singles

 * 1) [2022.01.01] Chronosphere
 * 2) [2022.08.18] COSMOS
 * 3) [2023.01.01] Saikyou no Takaramono
 * 4) [2023.03.24] Remember<love