Tonbokiri might be a good person to try with. Dimitri. Grune. Illumi? [He taps his chin.] Shiraishi, if he hasn't. Maou. Zero. Catra. People who seem difficult or keep to themselves. Some of them will likely sleep with our hosts if they think they'll get coins from it. Catra and Shiraishi definitely do favors for money.

And kinda feels like Polly and Nathan will be fine with it, too. [Hm. Are you missing an NPC, Junpei?]