Natsuka, also known by her original name Xia He, is a supporting character in the story and a member of the Zensei organization, where she serves as one of the Four Sorcerers under the title Bone Scraper. She has a striking appearance with very long pink hair and blue eyes. On the surface, she often presents herself as charming and wanton, using her looks and demeanor to get what she wants, but beneath this facade she is genuinely loyal and affectionate toward those she cares about, particularly her allies within Zensei. Her motivations are tied to her allegiance to Zensei and her partnership with the youthful-looking sorcerer Ro Ryou, alongside whom she carries out missions for the organization. In the early part of the story, Natsuka and Ro Ryou receive the stolen corpse of Zhang Xilin from the zombie master Kenken, and when the body proves useless, they task Kenken with capturing Zhang Xilin's grandson, Zhang Chulan, in exchange for membership. Later, Natsuka is present when Kenken delivers the captured Zhang Chulan to them, and she participates in the ensuing clash when Zhang Chulan's allies, Feng Baobao and Xu San, arrive to rescue him. She eventually departs the scene on a motorcycle during the chaos. Her key relationships are primarily within Zensei, especially with Ro Ryou, whom she works closely with, and she has a confrontational dynamic with Zhang Chulan and his associates. In terms of abilities, Natsuka is a highly skilled fighter, fitting the archetype of a dark action girl, and her combat proficiency makes her a dangerous opponent in the supernatural conflicts of the outsider world. She does not undergo significant visible development in the early seasons, remaining a consistent antagonist aligned with Zensei's objectives.