The long-awaited reunion

Exploration Stage: Octopus Citadel
From: Mr. Black
Description: This is the entrance to the Security Bureau headquarters. Funny...the password I used to use to open the door doesn't work. Who the hell changed it? Fortunately, I'm the one who invented the defense system here. Now, get out of the way! Turn this, lift the lever... okay, it's open. Follow me.
Completed: It has been a long time since I have been here. I still remember the day the fog approached. I ordered my men to protect the classified documents, but as you can see, they didn't make it with everything. What the hell is going on here...my portrait is on the floor. And your assistant Violet's portrait is on the wall!