At this point, he had a strong hunch that the person behind this door was lady Arisu since he had rendezvous with her today. Or to be exact, they speak the plan how they would prevent themselves from the invasion, at the same time, to discuss Riku's invention.
"Please don't ever try to tell her about this-!" His eyes were widened after he saw someone was forced to open the wooden door. Luckily, it was locked, yet, he knew Arisu has already heard their conversation as she wouldn't act like an aggressive one if she doesn't.
And all of a sudden, he hurriedly ordered them to wear all the attire that was lying on the surface, explained what would happen to them once they won't. 'They can't hide from her since lady Arisu could sense that an ordinary couldn't see.' He uttered to his mind, "Come on, hurry! We don't have much time sooner or later lady Arisu would enter and we are all done." He said in an average and worried tone so no one can hear his voice.