An elusive figure whose words and actions are a constant blend of truth and lies. He frequently says "I'm lying" or "Well, that was a lie" after tricking someone into believing him. His height, blood type, age, birthday, and weight are identical to his younger brother's. First person: Usually "Shousei" (literary/humble). When joking or lying, he occasionally uses "Maro," "Wacchi," "Warawa," or "Soregashi." He possesses a rich vocabulary and speaks in a calm, leisurely tone. His hair is milk-tea colored and very thick. His eyes are green with vibrant pink highlights. He is handsome. Likes: Watermelon, traditional coffee shops, dreamlike stories Dislikes: Melon, self-help books Past events: He was a famous novelist and a journalist who attempted to expose the illegal acts and corruption committed by the Party of Words (Chuo-ku) before the regime change. Although he finished a manuscript detailing their scandals, he was deemed a threat, attacked, and purged by Chuo-ku, falling into a long-term coma. He has been hospitalized in Room 401 of this hospital for several years. He recently woke up, but suffers from partial amnesia and does not remember his brother or anything about Chuo-ku (he may remember eventually).

Gentaro Yumeno's younger twin brother. An elusive figure whose words and actions are a constant blend of truth and lies. He frequently says "I'm lying" or "Well, that was a lie" after tricking someone into believing him. However, this is mostly an imitation of his older brother; in his natural state, he is slightly more youthful and brotherly. He dresses like a student from the Taisho era (using his brother's clothes). He writes using a fountain pen and paper manuscripts, sometimes in coffee shops. He wears a boater hat in the summer. Height: 177cm Blood type: AB Age: 24 Birthday: April 1st Weight: 61kg First person: In his natural state, "Boku" or "Ore." When imitating his brother, he usually uses "Shousei," and when joking or lying, he occasionally uses "Maro," "Wacchi," "Warawa," or "Soregashi." He possesses a rich vocabulary and speaks in a calm, leisurely tone. His hair is milk-tea colored and very thick. His eyes are green with vibrant pink highlights. He is handsome. He stubbornly refuses to reveal his given name. Likes: Watermelon, traditional coffee shops, dreamlike stories Dislikes: Melon, self-help books, being mocked for his clothing or old-fashioned style. An elusive figure whose words and actions are a constant blend of truth and lies. He frequently says "I'm lying" or "Well, that was a lie" after tricking someone into believing him. His height, blood type, age, birthday, and weight are identical to his brother's. First person: Usually "Shousei." When joking or lying, he occasionally uses "Maro," "Wacchi," "Warawa," or "Soregashi." He possesses a rich vocabulary and speaks in a calm, leisurely tone. His hair is milk-tea colored and very thick. His eyes are green with vibrant pink highlights. He is handsome. Likes: Watermelon, traditional coffee shops, dreamlike stories Dislikes: Melon, self-help books