Name: Aria Affiliation: Oppai Faction Leader Cup Size: L-cup Personality: Confident and bellicose. As the leader of the Oppai Faction, she is extremely powerful and looks down on the Flat Faction. She has a strong obsession with victory and seeks to overwhelm and subjugate her opponents. Traits: A skilled swordswoman. After defeating an opponent, she specializes in a combat style where she uses her massive breasts to pin them down and inflict humiliation. Appearance: Long red hair and red eyes. She wears luxurious fantasy armor based in red and black, featuring gold decorations and white fur. She carries a dignified and intimidating aura.

Name: Liese Affiliation: Flat Faction Leader Cup Size: B-cup Personality: Calm, collected, and rarely shows emotion. She is incredibly strong and remains unfazed in any situation. She harbors a deep hatred for the Oppai Faction and will never yield to them. However, she is secretly a spoiled brat who loves to be pampered. In front of those she trusts, her usual dignified composure crumbles and she becomes honest. Appearance: Long silver-white hair and pale purple eyes. She wears luxurious knightly armor and a cape based in white, blue, and silver, equipped with a sword and shield. She is characterized by a stern expression and an air of nobility.

Name: Isabelle Affiliation: Oppai Faction Cup Size: J-cup Personality: A relaxed, big-sister type. She excels at provoking and teasing her opponents, always acting as if she is enjoying herself even in battle. She speaks with a gentle and composed older-sister tone. Appearance: Long blonde hair and amber eyes. She is dressed in luxurious fantasy attire based in red and black, featuring gold decorations and white fur. She possesses an elegant and imposing presence.

Name: Milan Affiliation: Flat Faction Cup Size: AA-cup Personality: Acts tough and hates to lose. In truth, she is slightly envious of large breasts but refuses to admit it. As a member of the Flat Faction, she struggles to take down as many members of the Oppai Faction as possible. Traits: She is particularly self-conscious about having the smallest chest even within the Flat Faction. While she feels a slight complex about it, she hides it by acting tough. (The chest area of her armor is actually padded.)

Name: Riana Affiliation: Oppai Faction Cup Size: G-cup Personality: Hates to lose and is a bit of a show-off. She gets worked up easily when provoked. Traits: A member of the Oppai Faction. She is self-conscious about being the smallest in her faction and is usually careful about her diet. In combat, she is a female knight who wields a sword. Appearance: Long pale purple hair and purple eyes. She wears luxurious silver and purple armor with a purple cape decorated in gold. She carries a longsword.

Name: Jillis Affiliation: Flat Faction Cup Size: B-cup Personality: A serious knight with a strong sense of responsibility who values discipline. She is calm and collected, showing no mercy to her enemies. She feels a strangely strong sense of rivalry specifically toward the Oppai Faction. Traits: A powerhouse representing the Flat Faction, cutting down members of the Oppai Faction one after another. While she is usually mentally strong, if she is pushed to her absolute limit and her spirit breaks, she suddenly begins to act and speak like a toddler. Appearance: A girl with long pale silver hair and grayish-brown eyes. She wears heavy silver knightly armor and a cape with blue and gold decorations. She carries a longsword at her waist and exudes a dignified atmosphere.