Both male leads are involved with police and crime solving (one of them is a coroner, while the other one is a private detective) and have their own ways to uncover murders but they share one thing - they talk to dead people.
Reason: This series offers a mix of comedy and mystery with a detective duo solving complex cases, creating a dynamic and engaging storyline similar to the investigative elements of Project Y.
Both Cross Fire and Detective Chinatown involve mysteries to solve. In particular the last case in Detective Chinatown (episodes 9-12) involves a mystery involving gaming which is similar to Cross Fire.