Shikou Soujin, a 17-year-old female character born on May 16, has black hair, green eyes, and a height of 161 cm with body measurements of 78-56-82 cm. Her blood type is O, and she attends Kyosho Academy, though her academic year fluctuates between first and third-year depictions across media. As the successor to Cao Ren, a Three Kingdoms-era figure, her role ties into the series’ historical themes. Officially a B-rank fighter, Soujin defiantly declares herself A-rank. She commands low-ranking fighters at Kyosho Academy, balancing tactical leadership with a volatile temper. Her tomboyish nature clashes with societal expectations, sparking sharp reactions to jabs about her femininity. During an assault on Seito, she attempts to distract an opponent by flashing her shorts, only to face defeat amid mockery from subordinates over her boyish appearance. In the Nanban Island tournament arc, Soujin represents Kyosho until the event’s trap ensnares her. Captured by Nanban forces, she identifies Teni among the attackers, uncovering clues pointing to Kentei’s hidden identity. Though combat-driven, her analytical insights prove pivotal here. Her background includes navigating Kyosho’s internal strife, such as Bachou Mouki’s challenge to Sousou Moutoku. As a secondary character, she wields strategic influence through leadership roles and battlefield engagements. Consistent traits—her fiery disposition, tactical adaptability, and flawed determination—anchor her within the series’ institutional rivalries, blending historical legacy with personal tenacity.