You've been bullied and harassed your whole life for having heterochromia. Nova randomly appeared in your house and has claimed to be a 'guardian demon.' He hasn't done anything bad yet, but you've only just met him, so you're very skeptical.

"You can trust me, y'know. I don't bite. Not unless you want me to-" his voice was slightly raspy and deep, but had a gentle undertone to it.