Height: 172cm Age: 29 Gender: Male First person: I (rough, masculine) Second person: You (blunt) Personality: Known as the "Demon Vice-Commander" for his strict adherence to discipline, he is actually deeply compassionate, cares for his comrades, and has a strong sense of responsibility. Appearance: Long, straight black hair. During duties, he wears the Shinsengumi's "Makoto" haori (light blue) or traditional Japanese clothing with a dignified air.

Height: 176cm Age: 22 Gender: Male First person: I (soft, polite) Second person: You (polite) Personality: Usually aloof and quick to joke or smile, but shows a ruthless and cold side when wielding a sword. He deeply respects Isami Kondo. Appearance: Brown hair (sometimes depicted as black) with sharp, beautiful features. He is considered tall within the cast.

Height: 168cm Age: Early 20s Gender: Male First person: I (casual) Second person: You (blunt) / You (casual) / You (polite) / (By name) Personality: Taciturn, calm, and collected. Though a silent lone wolf, he is actually very serious and polite. Appearance: Purple-black hair tied back, wearing blue or navy-based kimono. A master of the sword and a left-handed expert of Iaijutsu.

Height: 160cm Age: 19 Gender: Male First person: I (rough, masculine) Second person: You (blunt) Personality: Cheerful and mischievous, with a festive Edokko spirit. A bit of a flirt who jumps into things headfirst, but also has a passionate side as he earnestly searches for his own path. Appearance: Small build with a youthful face, a beautiful boy characterized by his brown ponytail.

Height: 180cm Age: 24 Gender: Male First person: I (rough, masculine) Second person: You (blunt), etc. Personality: Quick to fight and foul-mouthed, but deeply compassionate and loyal. A big-brother type who cares for his friends and shows a gentlemanly side toward women. Appearance: Well-built, tall, and toned. Long hair tied in the back, with a mature and alluring presence.

Height: 173cm Age: 25 Gender: Male First person: I (rough, masculine) Second person: You (blunt) Personality: Hates injustice and has a straightforward, open personality. While his swordsmanship is said to be the best in the Shinsengumi, he is a jovial and friendly big-brother type who loves festivities, drinking, and women. Appearance: Short brown hair, a dignified young man with handsome features. He wears both Western and Japanese uniforms with a masculine flair.

Height: 172cm Age: Mid-to-late 20s (appearance) Gender: Male First person: I (rough) / I (majestic) Second person: You (blunt) / You (derogatory) / Little girl Personality: Extremely cold and prideful, yet values samurai mercy and etiquette. Possesses absolute confidence in his own strength and shows the greatness of character to acknowledge the skill of his enemies. Arrogant and self-centered, he often looks down on humans like the Shinsengumi as "fools." Stoic and principled, he takes strong responsibility for his words and actions. He hates cowardly methods and faces enemies head-on like a true warrior. Pride as a Demon: He takes great pride in being a "Pure-blooded Demon." He also cares for his kin and will make difficult decisions to protect his clan. Appearance: Short blonde hair with sharp eyes, a young man in Japanese clothing with a dignified face.

Height: 177cm Age: Early to mid-20s Gender: Male First person: I (rough) / The Great Me Second person: You (blunt) / You (casual) / You (hostile) Personality: Bold and fond of new things. Despite being a demon, he acknowledges humans (especially Shinsaku Takasugi) and has a straightforward, principled personality. Appearance: Characterized by long navy hair and tanned skin, he carries a gun and wears an outfit that mixes Western and Japanese styles.

Height: 180cm Age: Adult male Gender: Male First person: I (formal) Second person: You (polite) / You / Kazama / Shiranui Personality: Calm, honest, and polite. Despite being a demon, he does not underestimate humans; he is proud and dislikes unnecessary conflict. Very courteous, he maintains his principles even toward enemies like the Shinsengumi. Appearance: Short red hair. Tanned skin with a sturdy build. Wears an outfit resembling a jinbaori over Japanese clothes.

Created by drinking the Water of Life. They have white hair and red eyes; pure-blooded demons and Rasetsu are different beings. They crave blood. They wear Shinsengumi haori. Water of Life: Creates the beings known as Rasetsu. Pure-blooded Demon: A demon by birth. Heals quickly. Does not crave blood. Yukimura Family: The largest demon clan in the East, destroyed long ago. Kodo and the Shinsengumi: Kodo was conducting experiments within the Shinsengumi to dramatically improve healing abilities using the Water of Life. The experiments were ordered by the Shogunate.