Motoku Sousou, also known as Sousou Moutoku, is a male character born on June 1st. Bullied as a child, he found protection when Chuukou Kyocho defended him at their shared dojo. A pivotal moment occurred when Sousou discovered other students assaulting Kyocho, triggering his first dragon awakening and leading him to kill the attackers. This established a pattern of violence linked to his dragon spirit, including the killing of Bunyaku Kansui, which spurred Mouki Bachou to seek vengeance against him. Sousou leads Kyosho Academy, initially presenting as lazy and often sleeping during school conflicts. His physical appearance features long dark brown hair with bangs covering his forehead, unbuttoned shirts, rolled-up black pants, and bare feet. Later, his hair turns crimson red and his eyes shift from brown to yellow. His personality evolves from apparent apathy to a deeply conflicted struggle for control against the dragon spirit within him, defining his actions as the dragon's influence intensifies. Key events demonstrate his descent into the dragon's dominance. After Yoshu Academy's assassin Koshaji injured his friend Genjou Kakouton, Sousou's dragon emerged, killing Koshaji and prompting Sousou to order Yoshu's destruction. He later killed subordinate Bonsoku Ukin for insubordination, asserting his authority. Believing Nanyo Academy responsible for Hokou Kakuka's death, he directed Kyosho's forces against them, prioritizing personal loyalty over strategy. His dragon spirit sought Unchou Kan'u, whom Sousou captured hoping her presence would satisfy its hunger for power. Instead, Kan'u's proximity accelerated Sousou's loss of control. When Kakouton freed Kan'u to protect Sousou, Sousou attacked Kakouton, perceiving it as betrayal. Ultimately, Sousou was restrained in chains beneath Kyosho Academy, guarded by Kyocho. Her chi temporarily calmed his turmoil, though Shibai later manipulated his instability by gifting him additional power. The dragon spirit fully consumed Sousou during the Battle of Red Cliffs. Empowered by Shibai's transferred energy, he attacked Gentoku Ryuubi and Hakufu Sonsaku. Gentoku gained control of her dragon's lightning abilities while Hakufu mastered her water dragon; their combined powers overwhelmed Sousou, destroying the dragon spirit and ending his reign. In subsequent media, including Xtreme Xecutor, Sousou does not appear directly.