"Yuzu..." The person that name brings to mind is definitely not Ichigo's sister. It's a fleeting thought before Yuya focuses back on what Zangetsu is saying.

He perks up at the mention of shinigami, because that at least is a familiar word--and it sounds like a pretty similar concept. Gods of death, dealing with the souls of the departed, it's a popular concept in some shows he's watched too...

And then the brief recognition on his face slips completely and he's left looking as confused as he feels.

"So... how much are you like other Hollows, since your part sword?" All sword?? This must be how people feel when he's tried to explain Zarc, which is also just as nonsensical to him.