Kimun Kamui

Kimun Kamui is the father of Kanna Kamui.

Background
Kimun gave Kanna free reign on how she grew up, which caused Kanna use pranks on him, which resulted in him exiling Kanna to the modern world.

Kanna Kamui
Kimun has very little knowledge of being a father to Kanna and considers her a "comrade" instead of a daughter.

Kobayashi
He and Kobayashi share a taste when it comes to sake, but they completely disagree on the way to raise Kanna.