May Rosefield is one of main protagonists who previously worked for the Capital Army and later switched sides with the main group.
She is a former soldier of Emon and was assigned to a seach squad lead by Mike Edwards. 

Weapon:
Knives

Projectiles:
Magic concentrates into her knife and shoots out a projectile when swinging the knife. Sometimes, the entire knife is thrown at the target.

• May’s original personality was originally the complete opposite to the one showed in the series. She was supposed to be quite arrogant and cold.

• May was trained by Yan when she was 14. She respects him a lot and sees him as some sort of father figure as she doesn’t remember much of her own parents.

• Her parents were crushed by stones inside a mining cave they used to work in.

• Her youngest sibling, Jesse, possesses the soul of Determination.

• May’s entire family besides Jesse and their grandmother are traitless.

• She is insanely flexible and uses it to her advantages.