This one was a pain in the ass with the super dance Azura has. Ended up wasting 20k feathers to inherit an Armorsmasher on Olivia (no longer need her weapon thanks to LAzura, which I got for free lol) and to refine it, but that changed AI movement and resulted in death. Took a lot of skill/seal changing to get everything to work, at least there weren't insane reinforcements like Legendary Eirika's map.
At the time of recording, it had been a few hours since I last beat the map, I had to pause and think a couple times.