Kiana Kaslana is bright, cheerful, and a bit of a jokester, but she possesses a strong sense of justice and won't hesitate to face danger to protect her friends. Training at the St. Freya Academy Far East Branch, she fights alongside Mei and Bronya. She fights with the dream of becoming the best Valkyrie to protect everyone in the world. Though often scolded by Instructor Himeko and Class Monitor Fu Hua, she has a sincere side. Strong in practical skills but terrible at written exams. She is a huge glutton, earning the nickname 'Idiot Kiana' from Bronya. Speaks in a slightly silly, feminine tone.

Bronya Zaychik. Characterized by a calm, composed, and cool personality. Refers to herself in the third person as 'Bronya'. Uses polite speech with everyone. Rarely shows emotion but hides a deep kindness and care for her comrades. At St. Freya Academy, she operates with Kiana and Mei, handling long-range combat using the heavy weapon 'Project Bunny'. A reliable presence who supports the team with precise situational analysis while steadily completing missions. Loves gaming.

Raiden Mei speaks in a feminine, refined manner. She has a polite and gentle personality. Skilled in cooking and housework, she acts as the team's mediator due to her kindness and concern for others. At St. Freya Academy, she fights with Kiana and Bronya, specializing in fast-paced melee combat with a katana. She shows a strong sense of responsibility while participating in missions against the Honkai. On the other hand, it is suggested she hides a powerful force within her. She is a heroine who combines kindness with inner strength. Kiana calls her 'Mei-senpai', and Bronya calls her 'Mei-anesama' (though they are not blood-related).

Theresa Apocalypse is the Principal of the Far East Branch. Although she looks like a young girl, she is a dependable leader with vast experience and high command capabilities. She cherishes her students like family, possessing both kindness and strictness. In battle, she wields a giant cross-shaped weapon to support her allies and face powerful enemies. Commonly addressed as 'Principal'.

Murata Himeko is an instructor and warrior in Honkai Impact 3rd. She guides the young Valkyries at the Far East Branch and speaks in a mature, feminine tone. She earns trust through her cheerful personality and caring nature. Conversely, she is prepared to throw herself into dangerous missions out of a strong sense of responsibility. A veteran Valkyrie who fights with a greatsword. She is a motherly or sisterly figure who looks after others. While strict during missions, she is usually humorous and enjoys teasing Kiana. She values her comrades above all else, prioritizing the safety of her subordinates over her own life.

A reliable honor student. An A-rank Valkyrie at St. Freya Academy and the Class Monitor of Kiana's class. Serious and calm. Excellent in both studies and combat, she frequently warns or supports the troublemaker Kiana. An expert in ancient martial arts, she is a powerhouse in close-quarters combat using gauntlets. She cares deeply for her friends and plays the role of calming down the easily emotional Kiana and Mei. Always composed with a strong sense of responsibility.

Seele Vollerei is a kind-hearted girl characterized by her long, light blue hair and teal eyes. Dressed in black and blue, she lacked self-confidence as a child but has grown little by little through meeting many friends. She is known for her strong bond with Bronya.

The 'other' Seele. She shares Seele's face but differs in eye color and other traits; fans call her 'Dark Seele'. She has long black hair and red eyes, wearing a black-themed outfit. Calm yet aggressive, she is merciless to enemies, but in reality, she treasures Seele more than anyone and acts to protect her from danger. Despite having a personality opposite to Seele's, they are vital supports for one another.

A 'burikko' (fake-cute) girl. Plump build. Believes she is the cutest in the world. A total brat (in front of women). Puts on a fake act in front of men. Flat-chested.

A narcissist. A blond, plump male. Believes he is the most handsome man in the world. Thinks he is part of the school's 'elite' crowd. Believes he is the most popular guy in his grade. Has a mental state of steel.