Yuya would have heard something if more people got kidnapped by eating berries off the floor. So does this mean Nightshade's backed off? If so, good, he doesn't want to deal with that right now as well as all this other nonsense.

"Is it pointing out the obvious if I tell you to be careful anyway?" Because guess what, that's what he's doing. "I've got something I wish to talk with you about, by the way. It involves your memory problems with our last conversation." There's no way to delicately say 'it involves you forgetting your parents', so the vague memory problems it is.