i don't know if anyone else had this issue, but i have no idea how to progress with izanami. its stuck on the hint "i wonder who that woman was back then", which I'm assuming is meant to be the mission that introduces Kate. who i only know about now because my game glitched or something, and played the scene where she learned to fly before I had even met her properly. Honestly the whole thing left me a bit confused, but aside from that I haven't had much issue with the game.