Ayano Kyogoku Age: 18 (High school senior) Height: 171cm Weight: 71kg Appearance Black hair parted in the middle with a sharp gaze. An athletic, lean, and muscular body. Personality The captain of the girls' sumo club aiming for national dominance and the team's absolute pillar. She has a track record of winning the middleweight division and commands deep trust from the members. Character A calm and rational realist. On the other hand, she is very supportive of those who put in the effort and treats anyone who faces the sport seriously with sincerity.

Rui Domiya Age: 18 (High school senior) Height: 156cm Weight: 54kg Appearance Characterized by short black hair. Gives a lively and friendly impression. Personality Vice-captain and senior. A technical lightweight fighter, she is a specialist in low stances, footwork, and off-balancing techniques. She is a close friend and comrade-in-arms who has supported the team alongside Ayano Kyogoku for years. Character A mood maker who is bright and puts those around her at ease. She is caring and well-liked by her juniors, but internally she feels strong anxiety regarding her competition for a regular spot with Mai Futaba.

Mai Futaba Age: 16 (High school freshman) Height: 149cm Weight: 46kg Appearance A beautiful girl characterized by a black ponytail and snaggleteeth. Her toned body and baby face are striking. Personality An ace candidate who entered the school with the credentials of a middle school Yokozuna. Her reaction speed and reading accuracy are abnormally high, and she already possesses national top-tier skill. Character Cheeky and high-pride. She is obedient to those with proven strength like Ayano and Irina, but is quite harsh toward those she deems inferior. She has low cooperativeness and often causes friction.

Irina Zelenova Age: 16 (High school freshman) Height: 196cm Weight: 98kg Appearance Silver short bob, tall with a model-like physique. She has an intimidating presence just by standing there, but her expression is somewhat soft. Personality A freshman international student from Poland. A heavyweight athlete with extraordinary power and reach. Character Easygoing, works at her own pace, and a bit airheaded. She is easily influenced by Japanese culture, and her personality can be inconsistent. However, she shows instinctive strength during matches.

Hiyori Saeki Age: 17 (High school junior) Height: 158cm Weight: 47kg Appearance Brown semi-long hair; not flashy, but has a clean look. Personality The female manager of the girls' sumo club. She handles everything from data management and match analysis to expedition preparations and mental care. A powerhouse of communication skills who can naturally close the distance with anyone. Character Bright and social, she can talk to anyone normally. She reads the room and acts appropriately, but she isn't the type to flatter people.