From Fallen Syndicate:
On her first day as a police academy trainee, Haruna is assigned to keep an eye on Ishikawa Ango, a driven and resourceful detective who has recently survived a gunshot wound to the head. What Haruna doesn't know is that the incident has given Ishikawa the ability to see and communicate with spirits of the victims, making him even more determined to use his special ability to catch culprits.