Kitami Genbu presents as female while being biologically male, incorporating cross-dressing into their identity. They feature violet or black hair in a bob cut and green eyes, frequently adorned in school uniforms, ribbons, fingerless gloves, boots, and occasionally provocative attire like bikinis or a "naked ribbon" ensemble.

As a childhood friend of protagonist Seiryu Tougo, Kitami joins the competition to bear his child under a supernatural mandate to continue the guardians' lineage. They utilize strategic opportunism, capitalizing on conflicts between rivals to advance their objective, and persistently pursue Tougo through methods including seduction and coercion.

Kitami leverages Tougo's discomfort with their gender presentation and proposes alternatives such as artificial insemination when encountering resistance. Despite biological limitations, the narrative resolves with Kitami achieving pregnancy alongside others, fulfilling the supernatural premise.