Kazuma is a very loyal retainer and someone who has done his job well but at the end of the day he won’t be doing much against Bishamon. She is the true fighter in the series and has an absolute advantage here. She is both stronger and faster. She has a whole lot of weapons at her disposal while Kazuma is pretty much on his own. His border lines aren’t nearly strong enough to stop someone on this level. Bishamon wins.
Kazuma vs Bishamon