I like Gravy's idea. Holy crap, that was funny.
Personally, I LOVE Bonsly. It's been very funny in the last few episodes, so this filler(?) already sounds good to me. I'm still not a fan of Manene yet, but maybe this will be the episode where I learn to appreciate it. Plus, this raises the chance of Brock and James spotlight, as well as Marshtomp, Forretress, and Cacnea.
That's really all there is to speculate at this point. This title really came WAY outta left field, and I don't know what to make of the "King and Queen" scenario. I don't think it will be a love episode, but I really don't have any other guesses, so we'll just have to wait for the preview.