Shirako and the others who he was with didn't meet Ken-sensei, but they did see someone else. That someone was unfriendly, more like hostile. "I-Is that the killer Kei-sensei was talking about?" he thought aloud. Yume was wondering about it too it seems. The dangerous stuff didn't affect Kiku as much as before now, but that might only be because he had already moved on from the [I]killer[/I] thing. He did meet one already. Saw corpses as well. Perhaps he'd be less surprised with whatever they would see next. Not that he had fully recovered though. Judging from what Shirako said about the groaning man, Kiku wished they won't run into him.

Thinking about it, Shirako mentioned that he and Tohaku had split, "So Tohaku was with you? I hope she is alright too..." Everyone's mood seemed to have went down a bit as worry for Tohaku entered their minds. Fortunately, Shirako went and tried to remove the negative thoughts. "That's right. Tohaku is with us here. We'll meet her sooner or later." Kiku said, referring to being in the [I]same dimension[/I], if Kei-sensei were telling them facts then that would be it. 

Shirako stood up rom the bed and held out his hand to both him and Yume, being considerate with their current condition. He suggested staying here if they still weren't feeling fine, but Kiku's better than before now, so he might go with them. It is true that staying here longer will give them less chances of meeting their friends. Kiku was worried about Yume too, she had worse experiences than him. However, she tried her best to stand and walk. Her being not fine was evident, she was even holding to Shirako for support. Kiku wanted to protest, but he thought that he shouldn't, it's better this way for now after all.

Standing up, he said "I'm.. somehow fine now." he lost his footing for a bit as soon as he stood up. Staying still cured the dizziness, it might have just been an aftereffect. "Okay.. If you feel tired Yume, just say something okay?" Then he went and opened the door of the infirmary for the both of them, going out first as well. Making sure that it was safe outside, he called to the both "Let's go."