Episode 1: Brother and Sister are having sex at home while parents are away and they continue this fuckfest at school; having public and indoor sex at campus when nobody is looking.
Episode 2: Selfish, Quiet Girl
It's early Spring, and Kyouya confesses his love to Keiko. They kiss and have sex, but Kyouya struggles with feelings of jealousy after learning that she isn't a virgin. Kyouya demands unreasonable things from her like giving him a blowjob in the men's restroom and having sex in the P.E. storeroom, but she does as he asks. Kyouya thinks Keiko's madly in love with him, but he soon finds that his feelings for her are just as strong.
Erect, Sensitive Supplementary Lessons
Kazu and Chie's relationship seems to be just that of teacher and student, but they're actually lovers! One day, the two of them are alone for some extra academic review. As Chie studies reluctantly, Kazu comes over and starts rubbing her nipples. He discovers that she's covered them with band-aids, and this turns him on even more. Needless to say, Chie doesn't get much studying done. She turns the tables on Kazu by teasing his body instead, and the two of them are soon busy with activities best not done at school.