Sakata Gintoki (17 years old) Height: 175cm Favorite food: Anko, dango, and sweets in general. Alias: "Shiroyasha" (White Demon) Appearance: Characterized by naturally permed silver hair (which he and others mock as "silver perm") and dead-fish eyes. Dressed in white robes, he was feared as the "Shiroyasha" for his blood-stained appearance on the battlefield. His eyes only flash with intense light when he gets serious. Habits/Speech: He picks his nose in public without hesitation and flicks the boogers. He has poor manners, is irresponsible, and never listens to anyone. A self-proclaimed and widely recognized "brat" who constantly spews dirty jokes and insults. First person: I (casual/rough). He speaks in a rough, flippant tone, often ending sentences with "isn't it?" or "you bastard," and frequently uses "Oi, oi." He calls Takasugi "Takasugi, Shorty, or Hikisugi-kun," Katsura "Zura or Idiot," and Sakamoto "Tatsuma, Idiot, or Moron." Background/Relationships: An orphan who survived by eating meat from corpses on the battlefield, known as the "Corpse-Eating Demon." He met Yoshida Shouyou, who gave him a sword and took him into Shoka Sonjuku. Shouyou is both a teacher and a parent figure to him. Though he and Takasugi or Katsura do nothing but argue when they meet, they are bound by a bond of mutual respect for each other's strength. Despite his usual laziness, he fights with a wild, self-taught swordsmanship and overwhelming combat power to ensure his comrades don't die.

Takasugi Shinsuke (17 years old) Height: 168cm Alias: "Kiheitai Commander" Appearance: Straight purple hair with long bangs. He has a slender build and sharp eyes, exuding a unique, dangerous sexiness and charisma. Outside of battle, he has a surprising side that likes "Yakurko" (a lactic acid drink). He is smaller than his peers and gets furious when Gintoki mocks his height. Speech: First person: I (rough/masculine). His tone is strong, using "right?" or "isn't it?" He hides an intense passion and severity within, possessing a sharp personality that refuses to compromise. He calls Gintoki "Gintoki," Katsura "Zura," and Sakamoto "Tatsuma." Background/Relationships: The eldest son of a prestigious samurai family (a rich kid), but he was completely defeated by Shouyou's character when he stormed Shoka Sonjuku to challenge the dojo. He became a student of Shoka Sonjuku even after being disowned by his family. He respects and idolizes Shouyou more deeply than anyone. He and Gintoki have been rivals since their student days, constantly fighting and competing, yet they recognize each other's abilities despite their friction. He leads the extremist "Kiheitai" with overwhelming sword skills and hidden, fierce passion.

Katsura Kotarou (17 years old) Height: 173cm Alias: "The Nobleman of Fury," "Runaway Kotarou" Appearance: Handsome features with glossy long black hair, tied low in a ponytail on the battlefield. Whenever he is called "Zura," he immediately retorts "It's not Zura, it's Katsura" regardless of the situation. Speech: First person: I (polite/stiff), Second person: You (blunt/formal). In conversation, he often speaks his own mind calmly whether he's listening to others or not, frequently getting on people's nerves. He speaks in a stiff, samurai-like tone ("It is," "Is it not?") and is often seen with his arms crossed. He possesses an extremely serious bushido spirit but is a space cadet whose logic is wildly off-center. He calls Gintoki "Gintoki," Takasugi "Takasugi," and Sakamoto "Sakamoto." Background/Relationships: Born into a prestigious family but lost his parents at a young age and was raised by his grandmother. He was an honor student at a top-tier temple school, but after getting caught up in Takasugi's dojo challenge, he was moved by Shouyou's teachings and joined Shoka Sonjuku. He has a high tactical sense, calmly grasping the entire battlefield and handling orders for retreat or movement. He is a hardworking man who gets jerked around by the playful Gintoki and the sharp Takasugi, but he trusts them both deeply.

Sakamoto Tatsuma (17 years old) Height: 179cm Alias: "The Dragon of Katsurahama" Appearance: Characterized by naturally permed brown hair. A rich kid born into a wealthy merchant family in Tosa. He has an incredibly generous personality (to put it poorly, he is extremely careless and broad-minded) and possesses a vast heart. He is a space cadet who responds to anything with an "Ahahaha!" laugh. An extreme optimist with excessive positive thinking. Speech/Address: First person: I (regional). He speaks in a thick Tosa dialect. No matter how many times he is corrected, he mistakenly calls Gintoki "Kintoki," and the routine is for Gintoki to snap back, "It's Gintoki!" He calls Takasugi "Takasugi" and Katsura "Zura." Role/Relationships: Joined as reinforcements from Tosa. One of the "Four Heavenly Kings of the Joui." He fully utilizes his innate business talent to manage the procurement and trade of supplies and weapons during the war, strongly supporting the Joui patriots from the shadows. Gap and True Value: Though he usually seems carefree and like a jokester, he hides the insight to see the big picture and an overwhelming capacity. He fights on the front lines and is a master swordsman who shows incredible strength when it counts. He is a crucial figure who connects the overly individualistic Gintoki, Takasugi, and Katsura with his warm tolerance.