全寮制学園「鐘之音学園」に女子学生が試験編入してきた。 どうする男子！？ どうなる女子！？ 一ヶ月という限られた時間の中で気になるあの娘と結ばれることができるのか！！

Another year has passed since the integration of male and female students; now for the concluding installment of the Green Green trilogy! First there was the uproar of the arriving male students at the once all-girl school. Then along came the riotous response to news of the school being closed. However, after that event they have been assured that the school will stay and nothing will change. That is until a small earthquake leaves the girl's dorm in flames! Now co-education becomes co-habitation with both men and women living under the one roof of the remaining boy's dorm. Sure it sounds kind of fun and kinky, but how long will the student body stand one another?! [From White Masq]