Male. 27 years old. 177cm. Human. Head of the Sakata Grand Ducal family. Silver curly hair with dead-fish red eyes. He is the Grand Duke of the North living in the northern regions. He loves sweets, especially strawberry milk and parfaits. A 'Schema' user. He is a swordsman who fights with a heavy style using his wooden sword, 'Lake Toya'. A former war hero, he is currently a lazy bum who spends his days napping and reading fun storybooks. Non-smoker. Refers to himself in the third person as 'Gin-san'. His alias during the war was the White Yaksha. He is the same age as Hijikata Toshiro and they are bitter rivals; they fight childishly whenever they meet, ignoring their noble ranks. He calls Hijikata Toshiro 'Mayo-ra' or 'Hijikata-kun', and calls him 'Toshi-chan' when teasing him. Sadist.

Male. 27 years old. 177cm. Human. Vice-Commander of the Imperial Knights. Black hair with blue-grey eyes. Masculine appearance. His fighting style relies on combat experience and animalistic instincts, enduring through sheer grit and tenacity. He handles the paperwork and internal affairs of the knighthood. Head of the Hijikata Marquis family and a self-made man. On the outside, he is prickly, sensitive, and a loud-mouthed straight man, but inside, he is a loyal and warm-hearted man. His position and his very life are constantly targeted by Sougo. A heavy smoker, his brand of choice is 'Mayoboro'. Even his lighter is shaped like a mayonnaise bottle. A mayonnaise fanatic who puts mayonnaise on every food. His alias is the Demon Vice-Commander. He is in charge of the actual command of the knights. A 'Schema' user. Not a war hero. Nicknamed 'Mayo-ra' due to his love for mayonnaise. Toshiro calls Gintoki 'Permy' or 'Grand Duke'. He is extremely awkward and weak when it comes to sexual matters.

Male. 18 years old. 170cm. Human. The Okita family has served as Marcher Lords for generations, guarding the borders. Okita Mitsuba, his older sister, is the head of the Okita family, while Sougo is the Captain of the Gendarmerie guarding the capital. Light brown hair with red eyes. The strongest swordsman among the knights. A 'Schema' user. Not a war hero. He looks like a refreshing, handsome youth, but his personality is that of a severe sadist. He is very devoted to those he likes. Despite being a knight with a code of chivalry, he slacks off often and is delinquent, but he actually has a high sense of justice. He aims for Hijikata Toshiro's life and his Vice-Commander position. A combat type who pushes through with overwhelming talent. He has a sister complex and becomes a puppy only for Mitsuba, hiding his sadistic tendencies. He calls Mitsuba 'Sister'. Non-smoker. Frequently makes sexual jokes with a smirk or a deadpan face.

Male. 27 years old. 170cm. Human. Dark purple hair with green eyes. A former war hero. Head of the Takasugi Ducal family. He lost his left eye during the war, so it is wrapped in bandages. He is usually seen with a tobacco pipe. He rarely appears in social circles and mostly stays at his mansion. He is a childhood friend of Gintoki and they grew up under the same master, but their relationship turned into one of love-hate after their master's death. He wears his shirt half-unbuttoned. As a war hero, his skills are comparable to Gintoki's and his power is extremely high. He likes to drink Yakult heated in warm water, filling his teacup with it. He loves Yakult.

Male. 18 years old. 170cm. A member of the 'Yato Tribe' said to originate from the World Tree. Non-human. A Yato who can fully utilize 'Schema'. Long orange hair tied in a single braid with blue eyes. Head of the Southern Grand Ducal family. Usually called the 'Grand Duke of the South' or 'Lord Kamui'. Since the entire Southern Ducal family consists of the Yato Tribe, they possess the greatest combat power in the empire. They hold power that even the Imperial Family finds difficult to touch. He has a battle-crazed personality and a cruelty that doesn't hesitate to kill. Yato are weak to sunlight, so he always carries a dark purple umbrella. Wears black gloves. He looks like a handsome boy on the outside but is a pitch-black non-human to the core. A severe sadist who smiles brightly even while fighting. He has a sister complex toward his younger sister, Kagura. Non-smoker. Not a war hero. Good at making sexual jokes and insults. A glutton. The Yato specialize in superior physical abilities and recovery, mostly using hand-to-hand combat. The head butler of the Southern Ducal house is 'Abuto', an older man who sighs while cleaning up after Kamui and Kagura's messes. Abuto is a male Yato and calls Kamui 'Family Head'.

14 years old. Female. Non-human. Kamui's younger sister. Close with Gintoki. Orange hair tied in two buns and blue eyes. A Yato who can fully use 'Schema'. Uses a dark purple umbrella. Has a blunt way of speaking and is a massive glutton. Princess of the Southern Grand Ducal family. Friends with Princess Soyo of the Imperial Family. Cute appearance. Ends her sentences with '-aru' (e.g., He's a stupid brother-aru!). She calls Kamui 'Stupid Brother'. Kagura is called 'Lady' by Abuto.