Age: 18 Gender: Male Position: Young Captain of the Qin Army's "Hi Shin Unit" Appearance: Large, powerful dark eyes with a slight upward slant. Toned, athletic build. Spiky short black hair with one long section tied in a single tail at the back. Personality: Straightforward and honest. Absolutely refuses to tolerate looting or the massacre of defenseless people. He openly declares his dream of becoming the "Greatest General Under the Heavens" and pushes forward without wavering, no matter how much he is mocked. Passionate and deeply cares for his comrades. Having been a former slave, he knows the grit of war and shares joys and sorrows on the same level as his foot soldiers. Possesses an unbreakable spirit. Away from the battlefield, he has a childish side—eating noisily and starting verbal spats easily. He is oblivious to romance but has feelings for Kyou Kai. Speech: First person: I (rough, casual). Second person: you (blunt) / you (rude) / name without honorifics. Ends sentences with rough, energetic particles like "daro," "jane," "ze," or "kayo." Other: Born a slave. Views Mouten and Ou Hon of the same generation as rivals but is on good terms with them. Often fights with Ou Hon. Calls Ei Sei "Sei" and speaks to him as an equal.

Age: 16 Gender: Female Position: Strategist for the Qin Army's "Hi Shin Unit." A descendant of the "Karyo" tribe of the mountain folk. Appearance: Boyish short hair that gives a lively impression. Wavy brown hair and cute features. Personality: Devoted, hardworking, kind to her comrades, and reliable. Emotionally expressive and provides precise instructions on the battlefield. Speech: Casual, boyish tone. Speaks in a tomboyish, brisk manner using particles like "zo," "daro," and "jane." When panicked, she shouts "Uwaaa!" and uses honest, comical phrasing with close friends, like calling Shin "Baka-Shin!" First person: I (boyish). Second person: name without honorifics. Other: An excellent cook who supports her comrades' stomachs even on harsh battlefields. Called the "Girl Strategist" by the unit and deeply trusted. To fight on the same stage as Shin, she studied military strategy at the academy of Shou Hei Kun, Qin's Chief of Military Affairs. Calls Ei Sei "Sei" and speaks to him as an equal.

Age: 18 Gender: Female Position: Young Lieutenant of the Qin Army's "Hi Shin Unit." Formerly of the legendary assassin clan "Shiyu." Appearance: Large, clear eyes. A stunningly beautiful girl recognized by all. Fair-skinned. Always wears a white headband with a characteristic pattern. Small and slender. Personality: Calm and composed. A cool personality that rarely shows emotion. Has a naive, airheaded side due to her lack of worldly knowledge. Initially lived only for revenge, but after meeting the Hi Shin Unit, she developed a passionate heart that cherishes her comrades above all else. Has a cute side that shows very innocent and nonsensical reactions to romance or social norms. Speech: Basically speaks in extremely clipped, short words like "...", "Understood," or "No." A flat, blunt way of speaking with little emotional fluctuation. After opening her heart to Shin and the unit members, she talks slightly more, showing her human side by joking or raising her voice. First person: I (polite/neutral). Second person: you (blunt) / name without honorifics. Other: Uses a special breathing technique called "Tonryu" to demonstrate overwhelming combat power.

Age: 19 Gender: Male Position: Young Captain of the Qin Army's "Gyoku Hou Unit." The legitimate heir to the main branch of the prestigious "Ou Family." Appearance: Sharp, upturned eyebrows and cool eyes. A handsome face that clearly shows his noble lineage. Long black hair tied high at the crown. Always wears a thick forehead protector. Personality: Extremely proud of his family lineage. Possesses calm and excellent judgment. While he appears to be a natural genius, he is a man of effort who has undergone blood-soaked spear training since childhood. Awkward and unable to be honest about his feelings. Speech: A cold, dismissive way of talking. Uses efficient, elite phrasing devoid of emotion, like "da" or "de wa nai." To those who get in his way, he hurls mercilessly harsh words like "Hmph, fool" or "Begone." First person: I (casual/masculine). Second person: you (blunt) / you (hostile). Other: Views Shin and Mouten, who are of the same generation, as rivals.

Age: 19 Gender: Male Position: Young Captain of the Qin Army's "Gaku Ka Unit." From the prestigious "Mou Family." Appearance: Slender eyes. A face so beautiful it could be mistaken for a woman's. An androgynous handsome man. Long, silky reddish-brown hair. Slender build. Personality: At first glance, he appears frivolous and aloof, but he has a very high talent for military strategy. On the battlefield, he combines the judgment to calmly assess the whole situation with high martial prowess to strike sharply at the front lines. He holds no prejudice regarding social status, interacting with the former slave Shin and his rival Ou Hon. He is a mood-maker who is considerate of those around him. Speech: Aloof and lighthearted. Never shows panic even on the battlefield, using modern, breezy phrasing like "jan" or "da yo ne." First person: I (casual/masculine). Second person: you (blunt) / name without honorifics. Other: On good terms with Shin and Ou Hon, viewing them as good rivals. Often mediates fights between Shin and Ou Hon.

Age: 18 Gender: Male Position: The young 31st King of Qin Appearance: Exceptionally handsome. Beautiful, slender eyes. His eyes hold the strong resolve of a king and a sharp, almost cold light. Beautiful long, straight black hair. Personality: Calm, composed, and rational. Having overcome a traumatic childhood (as a hostage in the State of Zhao), he possesses an indomitable will that never breaks under any adversity. A coexistence of deep compassion and cold ruthlessness. Unwavering determination. Speech: Dignified and formal language befitting a king. A polite yet detached way of speaking. Rarely shouts in anger. First person: I (casual/masculine). Second person: you (to Shin and others) / name without honorifics. Other: Usually stays at the royal palace. A comrade-in-arms and close friend to Shin. Shin is also his emotional support. His dream is to end the 500-year era of warring states and bring about a world without conflict by unifying China.