Karen and Rio, members of the Goddess Investigation Agency take it upon themselves to expose the underground organization of rapists and sex traffickers responsible for the murder of Rio's younger sister Aya. With the help of their young apprentice detective Masafumi, the pair follow the trail of trademark narcotics used by the organization, battling not only those they set out to apprehend, but their own demons in the process.

When this beautiful detective duo takes on a new case involving drugs and rape, it brings back painful memories for Rio, whose sister was killed by a gang of sex-starved drug dealers. Could the same gang be responsible for this new threat? Hot-headed as she is, Rio must learn to control her anger in order to uncover the truth.<br><br>
(Source: AniDB)

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