[On the other hand, there's the awareness that these memories have an audience, which rather taints the experience (it's been so long since he got to slaughter anyone, and now he can't even reminiscence in peace. that's just typical).
Thus, it isn't long before his surprised expression fades and he schools his features into something more dispassionate - displeased with how this is turning out. Outwardly he still watches the memory, but his senses are trailed on Chise, mindful of her reactions. He doesn't move, doesn't try to explain, doesn't even answer her half-finished sentence-- instead waiting for her to react. If Sebastian has Chise pinned down correctly, she's not at all the worst choice for witnessing something like this... but will she be that accepting?
(Hooker boots are a completely normal fashion choice when you're a eldritch abomination of smokey shadows, by the way. "Different" nothing.)]