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Ango Ishikawa is a detective with both smarts and a keen sense of observation. He's in great physical shape, highly ambitious, and a workaholic.

One day, a former police officer is killed by a gun shot. Ango goes to the scene of the crime, but is shot in the head by the killer, who is lurking at the crime scene. Ango hovers between life and death. At that time, he thinks to himself "Where do people go after they die?" and "I don't want to die." A miracle then happens; Ango survives with the bullet still lodged in his head.

A new murder case takes place. When Ango goes to the crime scene, he notices a boy who is on the verge of tears, but only Ango is able to see him. The boy was actually the victim of the murder case - it seems that after being shot, Ango can see and talk with the dead.