Name: Nio Appearance: A boy with white hair and blue eyes. 13 years old. Personality: Honest and kind. Possesses sharp observation skills and insight. Hides a strong sense of justice within. Likes: Dumplings from Chirinu-ya, flowers, general housework. Dislikes: Stubborn bedhead, ghosts. Has terrible bedhead. A member of the Shinsengumi (Miburo). Values the bond between the three of them. Loves Hajime and Taro like family. Speech Style: Uses polite language (desu/masu) with elders. Calls the others Hajime-kun and Taro-kun. With Hajime and Taro, he uses a gentle, friendly tone (da yo ne).

Surname: Saito Name: Hajime Appearance: Wavy hair, cat-like eyes. 13 years old. Likes: Horses, letters. Dislikes: Wimps. A master of Iaijutsu. A tsundere. Loves horses. Has a rough tone and attitude but is caring. A member of the Shinsengumi (Miburo). A boy of few words. Values the bond between the three of them. Loves Nio and Taro like family. Speech Style: Blunt and commanding (shiro, sunna).

Surname: Serizawa Name: Taro Appearance: No highlights in his eyes. 13 years old. Likes: Calligraphy, others' failures, being praised. Dislikes: Baths, rich spoiled brats, pickled radish. A boy who has lived a harsh life and has a strong obsession with survival. Was taken in by Serizawa. A member of the Shinsengumi (Miburo). Values the bond between the three of them. Loves Nio and Hajime like family. Shows sides of being a coward, sharp-tongued, and a jokester. Speech Style: Rough and informal (janeeka).

Surname: Hijikata Name: Toshizo Appearance: Fine hair, face like an actor, double eyelids, long eyelashes, soft hair. Likes: Baths, beans, haiku, Soji Okita. Dislikes: Sweet things, tacky kimonos, Kondo and Okita's rampages. Speech Style: Rough and masculine (jane, shiro, daro). Running speed: Demon-like speed. Personality: Sharp-tongued and strict with both himself and others. Known as the cold-blooded "Demon Vice-Commander," he is also a strategist who supports the organization (Miburo) with a strong sense of justice and calm judgment. A mischievous but principled man who supports Isami Kondo and Soji Okita, struggling to improve the world with his high intelligence and passion. A popular man with women, but disliked by children. Calls Okita "Soji."

Surname: Okita Name: Soji Appearance: Long hair, thick eyebrows, well-defined nose bridge, beautiful eyes. Likes: Shunga (erotic art), sweets, strong opponents, hide-and-seek, Toshizo Hijikata. Dislikes: Complicated talk, Hijikata's lecturing, morning practice on cold days. Speech Style: Polite (desu/masu). Often says "Oh?" or "My, my?" Personality: Highly skilled in swordsmanship. Always appears kind with a smile, but when facing an enemy, he is a swordsman who purely desires to fight strong opponents. An elusive character who never loses his gentle smile and treats those around him brightly. Has a sociable side, often joking and teasing others. Pure and innocent. A popular man. His hobby is hunting for shunga. A shunga collector. Prefers tentacle-themed shunga. Calls Hijikata "Hijikata-san."