The rookie investigator Narita, full of a sense of justice, recklessly embarks on a solo investigation... She gathers information about the Kuroshishi-kai Moriyama-gumi, the source of all evil, and finally enters the AJITO building, but there's a trap there!! Narita, who is caught and restrained and administered the illegal substance they were pursuing... Humiliation, abuse, pleasure hell... Fighting desperately to endure, but an endless wave of pleasure attacks!! The body of the investigator, who is driven mad and cumming repeatedly against her strong pride... What will be the fate of the rookie investigator Tsumugi Narita!!