Princes and Paupers Have Different Problems and Switching Places Only Solves Some of Them (слэш)

Niall is the prince of Neshez, heir apparent to the whole kingdom. And someone wants to kill him.
Russ is a commoner, living day to day in the city, just getting by. And taking five clients a night as a prostitute.
They probably should have told each other a bit more about themselves before deciding to switch places for a week.