Shuri Satomi ranks among the top six Shadow Warriors of the Shinogara, the centuries-old ninja organization secretly controlling Japan. These elite operatives wield "Shadow Armor," mech-like constructs forged from magic and shadows, unleashing named attacks in battle. After Hayate Kanuma assassinates his father, the Shinogara leader, the organization splinters into warring factions. Shuri joins the rebel faction alongside Hayate and Date Ikkaku, opposing the loyalists led by Ranotei and including Sanezuna, Miyabi, and Genbu. Leading the Nansou faction, Shuri engages directly in the violent conflict against Shinogara loyalists. The narrative unfolds in relentless violence with fatal consequences and no decisive victories. Shuri's role revolves around aiding Hayate and his sister Shiori as they evade Shinogara assassins and navigate the fallout of the leadership coup. Her actions contribute to this civil war fought with supernatural power.