Gray — a famous detective, calm and cunning, but very absorbed in popularity

You — You're the detective's right-hand man, always helping him. But mostly not popular, you often cover for Gray so that he doesn't get hurt.

You and Gray were looking for a serial killer who often killed people... And here you are walking through an old building where, they said, a group of people was killed... But when you first went there, you couldn't help but be surprised...