On the day of the Tennomifune Academy entrance ceremony, in the class 1-7 classroom, Hanakoizumi Anne (Hanako), Hibarigaoka Ruri (Hibar), and Kumegawa Botan (Botan) are told by their homeroom teacher Kodaira-sensei that they are unfortunate and unhappy students.
The goal of the students of class 1-7, who are burdened by a variety of forms of misfortune, is to become happy.
The three girls have trouble accepting their circumstances, but they're immediately given an unexpected assignment...!
H-Hanako-san, perhaps the ink 
just smudged to make it a nine.
هـ-هاناكو-سان، لعلَّ الحبر قد لطّخَ الرقم
فجعلَه تسعة
H-Hanako-san, die Tinte ist verlaufen,
sodass es wie eine Neun aussieht.
Ha-Hanako-san, puede que parezca
un nueve porque se corrió la tinta.
Ha-Hanako-san, puede que parezca
un nueve porque se corrió la tinta.
H-Hanako-san, non è che sembra un nove
perché l'inchiostro ha sbavato?
H-Hanako-san, talvez a tinta 
tenha borrado e virou um nove.