When Su-A met Jung for the first time, that’s when he knew he liked boys. As the founder of the famous band Attack, Jung was Su-A’s idol and more. Years later Su-A follows in his idol’s footsteps to become a star but, little did he expect his new manager to be Jung?! Terrified to reveal his true feelings, Su-A spirals deeper into depression and refuses to work until Jung begins working closer with him. He promises to keep training so long as Jung rewards him… 
 
(Source: Tapas) 
Note: From Season 3 (chapter 65) the series becomes Mature (R19), Season 1 and 2 are All-Age (R15) even on the full version. Chapter count includes 16 special episodes.

Su-A Lee