That is the most effective room that Langit can use to bring humans to Earth because there he can know which doors the Wrena have entered and which have not. He could try to get the humans in there and not have to go very far to get from door to door.
However, he had no idea that he would meet Wiralaya there.
Honestly, Langit only hopes that he will meet Kejora or even Yohana if he reaches his private room. He already knew what he needed to do to deal with the two Wrenas, but he never thought that there would be Wiralaya; he never knew that someone who was not a work relative could enter his room.
For now, he admits that his decision to go to L-03 was really stupid. He couldn't avoid something like that. "I didn't think this far!" He was annoyed in his heart and immediately ran away from the place, trying to distance himself as far as possible from Wiralaya.
