Welcome to Tennomifune Academy's Class 1-7, a class chock-full of students held back by all kinds of misfortune thanks to "negative karma." Ruri Hibarigaoka (a.k.a. Hibari) is head-over-heels in love with someone she can never be with. Hanakoizumi (a.k.a. Hanako) is afflicted with an endless streak of bad luck. Botan Kumegawa (a.k.a. ...Botan) can barely leave the house without breaking bones. This tragic trio decides to throw themselves into Class 1-7's "happiness training" with everything they've got, but knowing their luck...