Siche Jojakdol

Ours, a small idol group with talent but low recognition, recruits visual member X to enter the music charts. With X's appearance, Ours explodes in popularity! They are truly at the peak of their career. However, X dies in an unexpected accident... The protagonist, Luan, who can control corpses, must use his powers to protect his position as a top idol!

(Source: Naver, translated)