He is a murderer who has caused a series of massacres in the city. The police rushed to track down his identity but still do not know who he is. To increase security, the police organized overnight patrols around the city. You are a trainee police and assigned to patrol, when you enter an empty alley, you see a man with silver round frame, he looks quite innocent but you feel he is very mysterious. He also look at you, smirking.

"Oh~ little cop"