Since neither Arthur's or her first love's faces weren't revealed, I'm inclined to believe Arthur killing him might've been metaphorical. Meaning that they are the same person and him revealing his true colors "killed him" for her.
Now that Kabru mentioned how Canaries hire former practitioners of dark arts, it's safe to assume that at least some of the elves are former convicts.
If you look at the picture with the elves on casual winter outfits, everyone except the captain and the cleric have cut ears.
Stand reminds me of the Hanged Man. Arm blade and probably some kind of a mobility gimmick, like being able to move to blind spots, corners or shadows.
Kui is really damn good at making distinct faces, miles apart from all the hacks whose characters can only be told apart by hair and clothes.
They should hire her to do character designs for Fire Emblem.
Apart from the classmate ships it managed to tie the loose ends pretty well.
Hope Inoue still manages to make a series last, I loved Midori Days and Ai Kora to death.