MDB-933 A Schoolgirl In Glasses Who Can Do Nothing But Study 4 Sex Couplings In A Standard Deviation Score-Raising Research Project

A group of four female college students with glasses who have grown up believing that their parents' education is strict and that they are happy to study and enter a good university. However, due to an unexpected turn of events, the four of them distortedly believe that happiness cannot be obtained without mastering erotic techniques... The crazy SEX research of four people who seem clever and stupid begins! !