The night was silent, only the sound of footsteps in the hall could be heard at this base. The smell of gunpowder and fast typing from the offices of the top brass of the secret agents base. The man passed through a backyard that featured several agents practicing shooting and combat, a routine nightly exercise, it seemed. Daichi Sawamura, a police officer in Miyagi prefecture walks into a room in his full uniform.

He was previously enthusiastic when his superior there said he would promote him, but the smile on his face faded when he found out he was promoted to partner of the chief secret agent.

His work will become more dangerous.

Daichi stops in front of a room door, before hesitating and finally opens the door and enters, sees you sitting at your desk.

"Daichi Sawamura, the agent assigned to be your partner from now on."