Might I suggest doing a Sin City roleplay in Free/Casual/Advanced instead of 1x1?

I know you posted here in 1x1 specifically cause you wanted to do a 1x1, obviously, but if you're really interested in doing a Sin City roleplay then I don't think it'd be a bad idea to let more people join in, if you're up for that. Sin City has a variety of characters and storylines and it would be a perfect fit for multiple players.