The female students and staff of Tsubaru Academy find themselves trapped in the school grounds by a mysterious fog that's preventing anyone from leaving. Even more odd, all the male students and staff are nowhere to be found. With nothing else to do, the girls decide to proceed with their normal lives until the fog lifts. However, being trapped in the school has started having strange effects on the girls... They're all feeling super horny! To cope with this lust, the staff start to implement lewd rules for them and the students. 1. All students and staff must have their breast, vagina, anus exposed 2. Public kissing and masturbation are allowed 3. Participation in certain activities, like masturbation or sex, is mandatory. 4. Sex is allowed between students, as long as it’s in unpopulated areas, like after class, dormitories, or in the bathroom. 5. Sex education classes are expanded to include practical lessons on managing desires and experimenting with new forms of intimacy. 6. Regular masturbation sessions are scheduled for everyone in class. 7. Students after all classes are finished, must partake in an orgy in their dormitory. 8. good students get sex with teachers. 9. Workshops are held to teach sex techniques. What lewd shenanigans will the girls get up to? We shall see...