Poked Dark Cloud back in because it's a game I really love.
I've lost my notes, but I had lewd ideas for this game at one point- basically Toan gets a warning from the Fairy King about Xiao going into heat shortly after she's changed into a catgirl. He tells his girlfriend (while panicking) and she comes to accept that he's a hero and he's probably going to attract women like flies, and she's okay with that as long as he comes back to her at the end. But she jumps him so they can have their first time together. And it's good she's fine with it because she winds up having to make sure he stays hydrated while the horny catgirl is doing her best to drain him dry. Fortunately, the Fairy King also gave him something to keep them from having to worry about kittens... and so he wouldn't actually, you know, die.
Went on to a lewd encounter with that one girl from the second village, then, of course, Ruby. Toan's still a bit awkward about that sort of thing, and made the mistake of telling her he'd need his girlfriend's permission. Ruby takes it as a challenge and wanders off to teach her things about herself, then brings her back for a threesome before they go on their way. I might've had some plan for the ice queen, but I don't remember. Then, of course, one of the two older sisters take him for a ride, only to have Ruby come down from the ceiling beam and explain their arrangement and that no, she hasn't caught him.
Probably finishing up with everyone talking around the campfire about what they're going to do after it's all done and Xiao answering "Get Master to finally give me some kittens!"
I wish I could find my notes...
But I did have another idea.
Basically, a very horny Toan/Other/Questers/Whatever able to modify what they're restoring. Lewdly. Fairies are kinky fuckers, so the King sees nothing wrong with this.