1girl,solo,long hair,headband,black hair,kimono,bracers,sandals,black nails

0.85 or 1.05 might be a good spot

get more accurate kyojiro with "small irises". The term "sanpaku eyes" may help as well.

Kyojiro Kagenuma from Way of the Samurai 2, or to actually find some material on her 京次郎 from 侍道2

She is a sadist and a psychopath who works as an enforcer in the Aoto Gang. She is a formidable opponent and wields the deadly Biteikotsu. It is clear throughout the story that she holds little allegiance to the gang, and simply works for them to sate her insatiable thirst for blood