Nina leads the all-female punk band "Kintama Girls" (Ball-Hunter Girls). Her band crafts songs specifically to mock Detroit Metal City's misogynistic lyrics and violent image. She draws significant inspiration from Sid Vicious of the Sex Pistols, frequently engaging in imagined conversations with him to seek validation for her musical path.

Her signature song, "Detarame Mazokon Cherry Boy," serves as a satirical reworking of the DMC acronym, labeling the band members as "nonsense mother-complex cherry boys" (virgins). The lyrics contain explicit threats of castration against DMC members as retaliation for their derogatory content targeting women.

Physically, Nina has blonde hair reaching her neck, green eyes, and stands approximately 1.62 meters tall. Her stage presence incorporates punk aesthetics, including distinctive lipstick.

A recurring feature of Kintama Girls' performances involves verbally and physically confronting male audience members, whom the band collectively considers inferior. This aggressive audience interaction forms a deliberate part of their anti-establishment expression.

Despite her public stance against DMC, Nina experiences internal conflict about her band's direction. She personally desires to create and perform original punk music reflecting her own artistic vision. However, external pressures, primarily from her manager, compel her to maintain the focus on satirizing DMC, creating tension between her artistic aspirations and professional obligations.