"How should I know? I didn't exactly get a list of what's gonna show what when I got here." It's technically true - Chikai really doesn't have any concrete knowledge of how this process works. Though his own understanding of what the objects are and have been used for at least gives him an idea of what could appear, if he wanted to help. Which, considering the non-violent memories would probably be more embarrassing anyway, he doesn't. "Just a risk you're gonna have to take if you wanna keep poking around."