In a present-day world where samurai still walk among us— Kisara Tendou, a swordswoman with the anti-organized-crime unit Black Sakura, raids a soapland rumored to be a yakuza front.

The receptionist, Yuuhei, is suspected of being a criminal.
He’s forced to strip, humiliated as even his foreskin is inspected.
Yet his sorry state and desperate pleas spark a strange curiosity in Kisara.

"If you hate dying that much, then beg for your life in a way that entertains me."

A domineering samurai woman.
A coward clinging to life.
Submission turning into pleasure.

Thus begins the ordeal of a spineless yakuza in an age where might makes right—!
*All characters depicted in this work of fiction are adults, regardless of their visual representation or textual description, and are not based on any real person*