Yamato Higa, deputy boss of the Kenzaki-gumi yakuza and inmate at Black Wing prison, cuts an imposing figure with his 186 cm stature, sharp eyes, and reddish-brown cropped hair. Tattoos sprawl across his chest, arms, and back, masking a fiercely loyal heart dedicated to allies. Once a trusted leader within the Kenzaki-gumi, admired by juniors and favored by the boss, his downfall came through a betrayal orchestrated by fellow high-ranking member Tsuyoshi Samejima. Learning of Saotome Hina’s wrongful imprisonment and the abuse she suffers under guard Aki Myojin, Higa shifts his focus to shielding her, despite her existing romantic ties. His unreciprocated feelings drive him to thwart Myojin’s schemes—halting prisoner assaults on Hina and openly challenging the guard. These defiant acts ignite Myojin’s wrath, leading to violent retribution against both Higa and Hina, including physical beatings and psychological torment. Undeterred, Higa infiltrates Myojin’s office to unearth proof of Hina’s innocence, provoking further retaliation. A collision during a prison transfer sees Higa shielding an unconscious Myojin from harm, complicating their adversarial dynamic. Determined to dismantle the conspiracy framing Hina, he confronts a restrained Myojin, demanding answers about his alliance with Yuzuru Akatsuki, the corporate mastermind behind Hina’s plight. When met with silence, Higa withdraws strategically to avoid worsening Hina’s situation, balancing pragmatism with unwavering loyalty. His actions weave a tense web of protection, rivalry, and unspoken resolve within the prison’s shadowed corridors.