1. Haha yeah Franciscus would totally count as a sinner. He's murdered someone and tried to hide it, which would have resulted in someone else getting scapegoated.

2. Franciscus is a pretty casual liar, so he'd probably notice the influence pretty quick, and probably try to stay away from Leo after that.

3. Entrancing him with music is perfectly fine! He doesn't have any resistances against effects like that.