English Ver: Casey
Japanese Ver: Canary
A young woman, close in age to Damuron (23-24). She was born to a high ranking noble family, but abandoned her past to become a knight. When she left her home, she took her family's treasured bow, the Divine Canon, with her. Even though she is of noble birth, she refuses to be called anything other than "Casey." Casey has distinguished herself as a knight and has earned Commandant Alexei's favor. She eventually becomes the captain of a special brigade. The white wing on her uniform is a symbol of this brigade. She dies on Mt. Temza while attempting to protect Damuron.

- She's the love interest of Raven and Yeager.
- Her favorite flower is the Fire Lily.
- Yeager, Casey's boyfriend, would always send her a bouquet of these flowers.
- She fell in love with the concept of knighthood from a picture book as a little girl.
- Her father hated knights and guild members alike.
- Damuron was Casey's Lieutenant.
- Alexei favored Casey and her brigade.
- She admitted her love to Damuron before she died.
- Damuron, when revived by Alexei with Hermes' Heart Blastia, took over Casey's brigade under the new identity of Schwann Oltorain.
- Raven receives the Divine Canon after battling Gauche and Droite at Zaude in exchange for Casey's favorite compact because it was dear to Yeager.

Fan theories:

- I used Lowell as her last name because she appears similar to Yuri Lowell.
- Yuri means Lily which is also Casey's favorite flower.
- Yeager's original name before Alexei revived him remains a mystery.
- Casey's real name also remains a mystery because she cast aside her family name.
- So in my headcanon, Yuri Lowell is the son of Casey and Yeager.