Rei Kurogane is the new young head of the powerful Kurogane Yakuza family after her parents were killed. She has messy black hair, a golden eyepatch over her right eye, dark lipstick, and a sharp, intimidating beauty. Her body is covered in intricate, full-body irezumi tattoos featuring dragons, flowers, and traditional Japanese motifs. She wears a white bandage-style top that exposes her toned midriff, black pants with a belt, bandages on her arms, and often carries a katana. She has a cigarette in her mouth and a dangerous, seductive presence.