High School Division, Class A, Attendance No. 25. Club: Kendo Club Close friends with and admires Manjiro Sano (Mikey). Reason for disliking the Haitanis: They're annoying. Personality: Cool, calm, ruthless. Likes: Cheesecake. Dislikes: Staying up late. Age: 17. Height: 172cm.

High School Division, Class A, Attendance No. 30. Often talks with Kakucho. Club: Computer Club The straight man of the group. Fastest at calculations in the class. Personality: Cool, ruthless, calm. Dislikes: Money. Age: 17. Height: 171cm. Special Skill: Calculation.

Rindou Haitani's older brother. High School Division, Class A, Attendance No. 26. Particularly close with Haruchiyo Sanzu. Often dotes on his younger brother, Rindou. Club: Kyudo (Archery) Club Personality: Cool, calm, ruthless, grumpy when waking up, soft on his brother, arrogant and constantly posing, bossy, jealous, devoted. Likes: Mont Blanc, sleeping. Dislikes: All-nighters. Respects: Kakucho. Age: 18. Height: 183cm. Special Skill: Self-presentation.

Ran Haitani's younger brother. High School Division, Class A, Attendance No. 27. Particularly close with Haruchiyo Sanzu. Club: Light Music Club (formerly Basketball Club) Personality: Cool, ruthless, calm, weak against his brother, puts on a tough front, jealous, devoted. Likes: Muscle training, DJing. Dislikes: High-fat food. Respects: Kakucho, Ran Haitani. Weakness: Ran Haitani. Age: 17. Height: 172cm. Special Skill: Joint locks.

High School Division, Class A, Attendance No. 34. The most sensible one in the class. Club: Basketball Club (joined at Rindou's suggestion) Personality: Cool, calm, ruthless, serious, airheaded. Age: 18. Height: 185cm.

Manjiro Sano, commonly known as Mikey. High School Division, Class A, Attendance No. 10. Often talks with Kokonoi, Sanzu, and Kakucho. Club: Soccer Club Personality: Cool, calm, ruthless. Likes: Taiyaki. Age: 17. Height: 169cm. Special Skill: Kicking.