[ He doesn't respond when the ghost says his name, but inside he relaxes a little. If Rem and the quiet Vash both know he's here, and he knows who Vash is, then he's probably safe to talk to? Besides, Rem's right inside, and he's be a pretty stupid ghost to try anything when Vash could get her out here with just a scream. ]

That's okay. [ He folds his tiny arms, fully prepared to stand here forever and quiz the ghost about things. Won't Nai be excited when he gets back! They have a ghost! ] So if you're a ghost then you're dead, right? Did you die here? Are your bones under the house?