Miyako's family probably came from some other part of Japan (the Kansai region seems possible, as one time, Yuno and Miyako were recalling that Sae called their teacher "Yosshi", and wondering what she'd be called this year; Miyako came up with something that made Yuno ask "What's with the Kansai-ben?"). Rather than travel by car, van, bus, or airplane, they took a ship for whatever reason. Unfortunately, during a storm, it hit something that made it sink. "There weren't enough lifeboats," and Miyako was forced to swim for the first time, or die trying. She came ashore on Kyushuu, perhaps knowing roughly where her new home was, and knowing that Fukuoka was in the north, she had to rely on the stars to guide her there. (And what's the direction that the stars will most readily point you in, in the Northern Hemisphere? Sure, you can derive the other directions, but...) She was eventually reunited with her family.
If she merely wanted to be friends, hey, that's no problem; she could've just joined the friends she already had. But Natsume wanted something more, and Hiro's apparent relationship with Sae gets in the way of that. This is why she took it so hard, and became something of a Jerkass to her. (On a related note, she seems to be afraid of Hiro alone, for whatever reason. It's not like Hiro has ever been intentionally mean to her, that we can see, and Hiro doesn't exactly evoke feelings of fear; perhaps Natsume's brain can't handle the contrary feelings of extremely nice person vs. winning rival for Sae's affections, so rather than snark at the nice person or be friendly to the rival, neither of which she can do, she gets out of there ASAP.)
- Her "frog" form kind of looks like an agent of the Incubators. Bidding her time until one of the girls wants something badly enough?...
- Also, one day Yuno contracts when she has trouble coming up with a project...and later becomes Izabel the Artist Witch.
- Alternatively, Ume-sensei could be a familiar.
- Plum, a minion of the witch of isolation. Its duty is to tell feel-good stories. This familiar may become so fascinated by the day-to-day lives of its victims that it forgets to eat them.
- Hiro will be her art teacher, and possibly homeroom. Hiro will finally get to see Yuno's piece, which the girl will have kept, and which will be in her room in the apartments across the street...
