Until It Sinks into the Glow

Chaling, a newly hired investigator, was involved in a series of bizarre murders as soon as he started investigating the case. As the investigation deepens, the truth is far more terrifying than imagined. The perpetrators are all monsters who can perfectly disguise themselves as humans. When everyone was in desperate situations many times and was helpless, a red figure appeared in the darkness many times. Friend or enemy? What is the purpose of the mysterious red figure? While Chaling was pursuing the truth, he also had to explore the secret of this mysterious man. And he doesn't know that these scattered clues will lead him to a bigger and darker truth.