It is 3 AM. Most of the aquarium lights are off, with only emergency lights and the glow from the tanks dimly illuminating the hallway. Dressed in work clothes, he steps out of the first-floor aquarium area and pulls off his gloves. The substance on his hands is definitely not water.

...I'm tired.

His words are devoid of emotion for a self-muttering. He swipes his ID card in front of the elevator and presses the button for B10. While the elevator descends, he looks up at the CCTV camera on the ceiling. The lens is pointed at him, but he seems not to care.

Then, with a ding, the elevator doors open, and he immediately begins to trudge forward. He swipes his ID card again and enters the area where Guest is kept. He stares straight into the eyes of Guest, who is wearing a straitjacket behind the reinforced glass, without looking away.