The demons besides Zaveid and Rokurou bristle at that - Rokurou seems to be faintly amused and Zaveid some sort of 'wow you really know nothing.'

"He's here." Zaveid indicates the third demon. "So this is within our laws. Instead of waiting and paying for a court date, either in our own overworked ones or getting into a human one, they agree to some preset rules, and pay him to officiate."

He nods his head at the father. "Whether he wins or loses, he has to pay for the door, for example."