In actuality, he wasn't lying. Rui just wanted to make sure.
"Where is he exactly?" Rui growled.
"H-He's in his office, at the very end of the underground warehouse." He managed to squeeze out.
Just then, the armed guards from above that he had simply zoomed past had finally caught up, having rushed downhill at top speed.
Rui tossed the man outside, but he couldn't be bothered dealing with them. Why waste time killing people that he could simply avoid? It's not like they could do anything in the first place. His goal was primarily to capture and bring back Faraday Lowminer, and secondarily to bring back the Martial Apprentices alive, if possible.
Of course, he had killed one of them already, but he didn't care too much. He didn't mind not perfectly completing the mission in order to regain some revenge.