He gave a dramatic "GAH!" at her words, ever a drama-queen himself. Yet in a flash he'd seemingly recovered (because that's honestly about the best reason someone could doubt him - most people's opinions were far less flattering.

He jabbed a thumb into his chest, standing proudly. "Yes, and there are plenty of fun gods. The Yato god at your service!"

And he even has a business card, which he presents to her with a flourish.