[OYC-120] Amateur Male-Female Observation! Monitoring AV Thorough verification of male-female friendship! Only good friends, men and women, who got drunk and missed the last train! (They are not lovers.) If they spend the night with nothing but a towel on, the prize money is 200,000 yen! (If you have sex with a guy, you will be rewarded 100,000 yen per shot if you cum inside him!)