Operation Idol Retirement by Grim Reaper

The secret hobby of the cold-blooded grim reaper Soomyung Choi is.. fangirling his favorite idol Go-in Kim?! One day, Go-in's shows up on the list of the dead. The cause of death is "Death as an idol!" Soomyung infiltrates as her manager in order to make her retire. Will the grim reaper be able to save his favorite idol?!