[So her hair and eyes must be the sign of a vampire in her world. Losing the ability to disguise must've been inconvenient.]

I can blend in better than most vampires in reality. The sun doesn't hurt me, and I don't need to drink blood to survive. [It makes him stronger, though. Natsuno wouldn't feed on humans, but drinking stored blood to better protect himself is a necessary evil.] Usually people realize I'm not human if they see me regenerate from injuries.

[Or if he freezes at the sight of a cross, or unable to pass a threshold invited. But really, it's mostly the injuries.]