"Huh. So it's like a disease then?" Based on what she knows so far, it makes sense to her that it's be something like that.

Eva grins and while he turns away, she talks. "He's a pippi - a kle'fari in uh, English." Her pronunciation of 'clefairy' is very much flavoured by someone speaking an utterly foreign word. "Either way, they're a species of pokemon native to Arkea - that's my world. We've got a number of other pokemon on the train, but most of them aren't from Arkea. That said, he won't hurt you. Steal your lap, beg for food -please don't feed him. He's getting fat-, try and trip you up, yes."

The fat comment earns Eva a sad, mournful look. He's skin and bones under all the fur! Underfed and overworked by a mean human! Eva ignores it. "He's also a fairy, if that means anything to you - and I assume whatever's that contain is food for you?"