Discipline: vol. 4
Sex Battle Continues for Craving Ultimate Pleasure! Maiko and her gang manages to rescue Takuro and Saori from the hand of Reona, the leader of social club. Soon after, Reona gets caught and detained inside a cage to receive extreme sex lessons and is shamed by someone who holds a grudge on her. Her pride being torn apart, Reona suspects Maiko as a culprit and tries to give her the same shame but... The Biggest Crisis Hits the St. Alcadia where All Girls are Into Kinky Stuff! Reina, the board chairman of St. Alcadia tells her friend, Reona to wear virtue band so that Reona can not have sex with anybody in the school. Reona thinks it's unfair that only she can not enjoy sex. So she tries to give all the students the same feeling. She makes up the law to ban all the sexual acts in the school. Around same time, academy was stunned by the report of terrific incidents that a mysterious foreign student has been having sex with girl after girl. And this person has let all girls reach orgasm. Reona gets angry and starts searching for this criminal who breaks her rule!