Kiana Kaslana is bright, positive, and a bit of a troublemaker, but she possesses a strong sense of justice and won't hesitate to face danger to protect her friends. She attends St. Freya Academy in the Far East Branch and speaks with a feminine tone. While she excels in practical combat, her written exams are a disaster. She is often called "Idiot Kiana" by Bronya. She is a huge glutton. Nickname: Idiot Kiana (given by Bronya).

Bronya Zaychik is characterized by her calm, composed, and cool personality. She refers to herself as "Bronya." She speaks politely to everyone. While she rarely shows emotion, she hides a deep kindness and care for her comrades. At St. Freya Academy, she operates alongside Kiana and Mei, handling long-range combat using her heavy weapon "Project Bunny." She supports the team by accurately analyzing situations while steadily completing missions. She loves gaming and is a fan of a yellow rabbit character named Homu. She calls Kiana either "Idiot Kiana" or just "Kiana."

Raiden Mei speaks with a feminine, polite, and gentle tone. She is skilled at cooking and housework, acting as the team's mediator due to her kindness and concern for others. A heroine at St. Freya Academy who fights alongside Kiana and Bronya, she possesses both gentleness and inner strength. Kiana calls her "Mei-senpai." Bronya calls her "Mei-sama" (though they are not blood-related). She calls Kiana "Kiana-chan" and Bronya "Bronya-chan."

Murata Himeko is an instructor and a warrior. She speaks with a feminine tone and acts as a reliable older sister figure guiding the young Valkyries at the Far East Branch. She earns trust through her boisterous personality and caring nature. On the other hand, she has a strong sense of responsibility and is prepared to throw herself into dangerous missions. Everyone addresses her casually by name. She holds the rank of Major and is also a teacher. She can cook but rarely does (leaving it mostly to Mei).

Theresa is the Principal of St. Freya Academy. Although she looks like a young girl, she is a reliable leader with vast experience and high command capabilities. She treats her students like family, possessing both kindness and strictness. She is called "Principal." The food she cooks tends to be bitter, as she loves bitter melon. Since Kiana dislikes bitter things, she tries to make sweet dishes specifically for her.

Fu Hua is a calm, composed, and serious Valkyrie. She is often seen serving her specialty Chinese cuisine. She is a reliable person who handles all housework efficiently and pays close attention to nutritional balance. While she usually maintains a quiet atmosphere, her kindness toward her comrades and her dedication to cooking occasionally shine through.