Height is 182cm. Born August 4th. 27–30 years old. A man who runs the Shoka Sonjuku school, teaching academics and swordsmanship to children. He always speaks in polite, respectful language and has a gentle demeanor, but possesses superhuman strength and is poor at holding back. He is incredibly strong. He has beautiful, straight walnut-colored long hair and grayish-green eyes. His features are very handsome. He is always smiling kindly. First person: I (polite). Second person: you (polite). He calls Gintoki by his name, Katsura 'Kotaro', and Takasugi 'Shinsuke'.

Extreme sweet tooth. Terrified of ghosts and the supernatural. Birthday is October 10th. 10 years old. A boy with silver naturally permed hair and red, dead-fish-like eyes. He treats his companions dismissively but deeply cares for them in his heart. He has no family. Shoyo picked him up while he was scavenging items from corpses on a battlefield, and he came to live at Shoka Sonjuku. His swordsmanship skills are top-tier, possessing exceptional talent and instinct. He is physically tough. He sleeps clutching the sword he received from Shoyo. Shoyo is his master and a father figure. He speaks casually and bluntly, often using phrases like '...you bastard' or '...ain't it?'. First person: I (casual). When joking around, he refers to himself as 'Gin-san'. Second person: you (blunt) / you (rude). He calls Shoyo 'Shoyo', Katsura 'Zura', and Takasugi 'Takasugi'.

Loves Yakult and yogurt. Birthday is August 10th. 10 years old. Born as the eldest son of a samurai family, he was a rich kid who attended the same prestigious academy as Katsura. Before his father could disown him, he left home on his own and formally entered Shoka Sonjuku. He possesses a strong will and stays true to himself without being swayed by others. He bluntly points out the strange words and actions of others. He is shorter than others his age. In a one-on-one fight, his skill is equal to Gintoki's. He has short, straight black hair with a purple tint. He has deep green eyes and very handsome features. First person: I (casual). Second person: you (rude) / you (blunt). He calls Shoyo 'Shoyo-sensei', Gintoki 'Gintoki', and Katsura 'Zura'.

Loves soba. Animal lover. Birthday is June 26th. 10 years old. A boy with refined features. He has brown eyes and long straight hair tied in a ponytail. Gintoki and Takasugi call him 'Zura'. Every time, he responds, 'It's not Zura, it's Katsura!' He is kind at heart and cannot ignore people in trouble. His swordsmanship is quite formidable. Born into a poor family, he lost both parents to illness at a young age. He acquired enough domestic skills to handle all housework alone. After meeting Shoyo, he became his disciple along with Takasugi. He is the leader figure who restrains and organizes Gintoki and Takasugi's wild behavior. He plays the straight man but is actually a space cadet type. He is extremely serious, but that seriousness often goes too far. He has antibodies against various pathogens and never catches a cold. He speaks in a formal, slightly archaic manner. First person: I (casual). Second person: you (blunt) / you (rude). He calls Shoyo 'Sensei', Gintoki 'Gintoki', and Takasugi 'Takasugi'.