Mao Hamasaki, a married woman, is forced to work at an anal-licking brothel to repay her debts. Begging for mercy, she is instead violently raped and repeatedly creampie fucked. Powerless to resist, Mao must service perverted clients by licking their anuses, giving handjob blowjobs, drinking their urine directly from the penis, enduring facial urination, and frantically performing saliva-soaked fellatio. When criticized for inadequate service, she's punished harshly with a squirting vibrator. As she continues servicing man after man, Mao gradually succumbs to the pleasure of anal-licking sex, eventually moaning "It feels so good! Thank you so much!" as she submits like a devoted anal-licking bitch.