Ishikawa, a close-range fighter in a mercenary group tasked with capturing a child named Saki, bears medium-length brown hair and distinctive black ink markings across her upper face. Her attire—black garments with a revealing chest design, a draped mantle, and a crimson waistcloth—echoes her lethal arsenal: a formidable hand scythe, concealed blades, and a short sword. Fiercely argumentative yet loyal, she clashes frequently with comrade Haruto, whose taunts easily ignite her temper. On missions, she favors direct, efficient combat but adapts to orders, swapping blades for a feather to non-lethally rouse a captive during interrogation. Her pursuit of Saki sparks violent clashes, including one where the child’s powers briefly overwhelm her. When their employer dies, the group abandons the mission, joining a supernatural war. In the final battle, Ishikawa calls Haruto “friend” moments before an arrow pierces her skull, her death spurring his reckless, vengeful rampage. No details exist about her past beyond the mercenary unit or her life outside their documented endeavors.