The thing with MiA's new legs was actually fun to write - I figured that someone whose legs were suddenly lengthened by magic wouldn't exactly be steady on their feet, at least without further magical help! I figured the extra limitations on wish-giving made sense - time travel has the potential to screw a LOT of things up, so it would be wise for the Djinn to forbid it for humans.

Subaru's backstory is undeniably tragic - and you're right that his society would not exactly take kindly to him loving other men. It was his misfortune to end up betrothed to the daughter of a man whose possessiveness was matched only by his ruthlessness. Where his new life takes him, though, remains to be seen at this point of the story . . .