Seizing the opportunity to show off his newfound skills as a flirt, Seungoku enters the room and finds that there is no door leading to the third floor. He wonders what is going on in the room, and wonders if there is a door that has just opened. He realizes that it is the first time he has seen a door open, and he wonders what it is for. He also realizes that the room is very large, and that the light does not go all the way to the top of the third story. He asks what the heck the lights are for, and the answer he gets is that they are for heavy industries, which are factories that produce large-scale electricity.