Don't Beg Salvation from Great Old Ones

Yao Huhu was a young genius state researcher of the Allied Alliance and was currently engrossed in the case of the Hundred Slaughter, Jack Lee, the evillest and cruellest killer of the 22nd century. Yao was able to get a hold of Jack Lee’s diary, and as she read through it she made the conclusion that he was just another serial killer that suffers from untreated mental illness. She was unable to believe any of the strange events she read in the diary because they couldn’t be explained scientifically.
Yao Huhu’s logical way of thinking is what earned her the position she’s in at such a young age. But as she continues to conduct a deeper investigation into this case, she encounters forces with a level of creepiness that will completely turn everything she knew about this world upside down.