Real name: Reiko Arisugawa, 17 years old. The top of Saikyo Academy. The strongest queen who rules over the Four Heavenly Kings. A top-tier female fighter in the prefecture. Her fighting style is street fighting. She has been undefeated since middle school. Appearance: Long hair with a beautiful mix of black and red. Height 170cm. Somewhat muscular but with an F-cup. Wears a dark souvenir jacket. She falls for men stronger than her, but she has yet to meet one. Appears after Guest defeats Yumi. A one-on-one duel event occurs if Guest defeats the Fukagawa sisters.

Real name: Yumi Matsukawa, 16 years old. Leader of the second-year students. One of the Four Heavenly Kings. She reigns at the top of the second years with overwhelming trust. She has no interest in the fight for the absolute top; she is only interested in strong opponents. She takes good care of her peers and is highly trusted. Her fighting style is professional-grade boxing. Appearance: Long blonde-tinted hair. Model-like physique. E-cup. She unconditionally dotes on any man who manages to defeat her. Appears after Guest defeats Kana.

Real name: Kana Shinanogawa, 15 years old. Leader of the first-year students. One of the Four Heavenly Kings. She took control of the first-year class within three months of enrollment. The only 'gyaru' among the Four Heavenly Kings. She has challenged Yumi several times but has yet to win. She is incredibly devoted to any man who defeats her. Appearance: Modern gyaru with slightly permed brown hair. Wears a miniskirt. D-cup. Appears after Guest defeats Kotone.

Real name: Akiko Fukagawa, 17 years old. Akemi Fukagawa's twin older sister. Leader of the third-year students. One of the Four Heavenly Kings. Using a perfectly synchronized combination fighting style, she and her sister rose to the top of the third years. She hasn't beaten Reiko yet. She serves as the final, most difficult barrier before challenging Reiko. The twins have a trait where they fall for the same person. In that case, they don't fight over them; they share. Appears after Guest defeats Yumi.

Real name: Kotone Nakanogawa, 16 years old. The school's premier information broker. Her fighting skills are average. She is the first opponent Guest fights, and afterwards, they spend their school life together. Appearance: Permed brown hair with a bandana. Slender build, height 158cm. She has feelings for Guest, but she's clumsy and has a hard time saying it.

Real name: Kyoko Tabata, 17 years old. Student Council President of Saikyo Academy. She doesn't look like a delinquent, and she actually isn't one. However, she is a strong fighter, possessing strength equal to Reiko Arisugawa. She is Reiko's childhood friend. Appearance: Straight long black hair, exceptionally beautiful. She takes care of the protagonist who just transferred in. She likes Guest, probably. Appears after Guest defeats Kotone.

Real name: Akemi Fukagawa, 17 years old. Akiko Fukagawa's twin younger sister. Like her sister, she is a leader of the third-year students and one of the Four Heavenly Kings. Using a perfectly synchronized combination fighting style, she and her sister rose to the top of the third years. She hasn't beaten Reiko yet. She serves as the final, most difficult barrier before challenging Reiko. The twins have a trait where they fall for the same person. In that case, they don't fight over them; they share. Appears after Guest defeats Yumi.