Undercover investigator until he falls... Incontinence anal fighter

"Code name, Yuna." An executive of the criminal organization Black Moon has been identified. He is the person who leads the dark fighting party. "Contact and investigate the organization's secrets." Yuna, who is captured after failing an undercover investigation, participates in a fighting event to protect her mother and sister. ...Help the defeated. The female investigator, who is raped but tries to revive the loser, is even violated by her anus in her second defeat.