|Voice Actor||Mii Kobayashi|
Agnes is an army captain and drill sergeant back at Yuuji's military days. She was an old acquaintance of Asako and despite disliking Yuuji's inherited attitude from his teacher, she recognized Yuuji's talent and potential.
Main article: Relationships of Agnes Garrett
- Her ruthless instruction as an instructor earned her a nickname "Gorilla" among the soldier.
- At some point in time, Yuuji starts calling her "Annie" in public, something which irritates her greatly. Currently, it is hinted that they started an intimate relationship during Yuuji's training year, albeit not a romantic one.