On the "inverse" dating sim thing:
A reverse dating sim, where you must guide Reimu away from several would-be suitors. Your choices will determine how well she grazes their advances and what fate has in store for her. But don't be a jerk!
I've always loved twists on the usual goal of a game genre while still using the same mechanics.
I'm also a giant romance fan. I literally mod [email protected], a genre basically about getting a girl into a romance with a guy from the girl's POV. I am also asexual (no sexual attraction to anyone) and I support aromantic (no romantic attraction to anyone) representation. I like reading Reimu in romances, I'm also happy to see her uninterested in romance and not made out to be bad for that.