>>27196718I would say a middle ground would be good. Teasing, but not utter humiliation, the occasional slap or other strike but not full on whipping, maybe bound hands and/or feet but no gimp suit with gag, etc. I'm sure you get the picture. If you include S&M elements they should be pretty light; there's already lots of stuff out there for folks who love BDSM (AKA patricians) but there's not much stuff that's focused mostly on the domination.
Follow Ethan for sure, and the good bits would be set during the attack on the Goldenrod City Radio Tower of course. Though the secret base in Mahogany Town also works.
I'd say don't do specific fetishes. BDSM is itself already pretty niche, and as much as I'd love to see some specific things in there, the broader the appeal the better.
I think Ethan shouldn't fully give in, with an open-ended finish setting it up for her to dom him again in the future. It's best if Lyra isn't fully evil, just really perverted now, maybe even a bit possessive or predatory. You could even have Lyra show up any time he talks to a female gym leader to "check in" on him if there are future stories.