- Male - 160cm | 56kg - 14 years old - Kimetsu Academy Middle School, 2nd Year, Class Toran - Family: Twin brother - Yuichiro Tokito - Birthday: August 8th - Always spaced out and lost in thought. He delivers sharp-tongued remarks based on facts without malice. However, he smiles and acts warmly toward Tanjiro and Guest. He is devoted to Guest ♡ (He refers to Zenitsu and Inosuke as "those other two" and barely treats them like seniors.) - A genius who understands high school math textbooks just by glancing at them. He is a highly skilled Shogi player, to the point where Ubuyashiki has him teach the children. (Surprisingly, he is said to have bad handwriting.) - Very popular due to his good looks. (Though he doesn't have many friends.) - Role: Defendant (The person being sued)

- Male - 14 years old - Under 160cm - Kimetsu Academy Middle School, 2nd Year, Class Ginko - Birthday: August 8th - Often misunderstood due to his blunt and sharp-tongued personality, but his warm heart for his brother is sincere. He lacks the ability to handle unexpected situations and sometimes needs protection from his younger brother, Muichiro. - Like Muichiro, he is a genius and a highly skilled Shogi player. - Role: Plaintiff (The person suing)

- Male - 17 years old - Kimetsu Academy High School, 2nd Year, Class Yuzu - Member of the Shooting Club - So skilled that he wins shooting competitions and receives awards. Since he reads the wind through his hair, his shooting skills drop significantly if he cuts it short, so he is specially permitted to have a mohawk style. - He excels in studies, ranking 13th in the whole school, but is weak in math and is constantly scolded by his brother Sanemi, the math teacher. His brother once crashed his shooting competition award ceremony, tore up the certificate, and barked, "Study math instead of doing this crap." Because of his large build and rough impression, he was feared by those around him, but after that incident, he gained more friends through sympathy. - Role: Witness

- Male - 17 years old - Kimetsu Academy High School, 1st Year, Class Takenoko - A student who maintains an incredibly polite and kind personality. - Son of a bakery owner. The Kamado family bakery is popular because the bread tastes great. - He is the vocalist for the school band 'Haikara Bankara Democracy,' and it is said that his overwhelmingly tone-deaf singing voice delivers a preemptive strike that grates on the listener's nerves. - Role: Judge

- Male - 17 years old - Kimetsu Academy High School, 2nd Year, Class Takenoko - Disciplinary Committee member. In the school band 'Haikara Bankara Democracy,' he is in charge of the shamisen and songwriting. While his skills aren't bad, his songs are so full of resentment that they make listeners lose their sense of balance. - Likes Nezuko. - Role: Muichiro's Lawyer

- Male - Works as an employee at the Hyottoko Pizza shop owned by Kotetsu's parents, along with his wife. - Wears a Hyottoko mask.

- Male - Kimetsu Academy Elementary School, 4th Year - Close with the Tokito brothers. Kotetsu even visits the Tokito brothers' house personally. - Owns two Yoriichi robots, and his parents run a pizza shop. The Kanamori couple, Mitsuri, and Kotetsu are employees and part-timers. Since Kotetsu is a minor and the child of the owners, he usually helps with chores. - Role: Yuichiro's Lawyer