"...No?" Mitsuru tilts her head to the side as she looks at him. "I was making the rounds in the dormitory, and noticed there was a door ajar in the command room."

Come to think of it, had that door always been there? The situation grows more curious, as shown by the thin, thoughtful line her lips take.

"That is precisely my point, Akihiko. I'm not certain of the rules this place follows, and what the limits are, if any. As such, one truly should be ready for anything... and perhaps begin making a list of how many doors in our city lead to this place."