Kuroha Diana Shiratori operates as Seleção No. 11. She maintains an affluent lifestyle and projects superiority through her role as CEO of a modeling agency. Her Japanese heritage is reflected in her blue or mint green hair and blue eyes.

She adopts the alias "Johnny Hunter," claiming involvement with numerous men through her pattern of targeting and castrating male offenders, particularly rapists. These nighttime pursuits through urban environments sometimes occur outside her full conscious awareness until after completion. This activity intersects with her Seleção participation, where she primarily leverages the granted resources for personal objectives over broader societal aims.

Her interactions with Seleção No. 9, Akira Takizawa, reveal a complex dynamic. Despite antagonistic tendencies toward others, she retains feelings for him and hopes he recalls a significant shared promise. During the Seleção-orchestrated missile crisis, she strategically conflicts with Takizawa, employing tactics like manipulating his driving records and disrupting hotel operations to impede him.

Subsequently, she demonstrates protective instincts toward Takizawa. Faced with missile threats targeting the decentralized Juiz supercomputers, she deliberately sacrifices her assigned Juiz trailer to safeguard Takizawa's operational capacity. This act eliminates her from the Seleção competition while enabling his continued participation. Later, she advises him to return to Japan to address questions about his alleged lineage as the Prime Minister's illegitimate son. Following this intervention, she departs without further involvement in unfolding events. Her narrative concludes without definitive resolution regarding her status after the destruction of her Juiz infrastructure.