Cognitive Anomalies Control Bureau

Ordinary people are silent and hear something they shouldn't hear late one night. He was brought into an organization called the "Cognitive Anomaly Control Bureau", which specializes in dealing with anomalies that should not exist. Here, equipment comes with a price, missions come with death, and he is just a new investigator. On his first mission, he was trapped in an abandoned school. Things that shouldn't be there are looking at him.