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...!
I'm sure my finger bone just cracked a little.
أنا متأكّدة أنّ عظمة إصبعي قد طقطقَتْ فحسب
Sicherlich war das nur das Knacken
meines Fingerknochens.
Estoy segura de que mi dedo
solo se fracturó un poquito.
Estoy segura de que mi dedo
solo se fracturó un poquito.
Les os de ma main doivent être
légèrement fissurés, voilà tout…
Le mie dita 
hanno solo scricchiolato un pochino.
Tenho certeza de que meu
 dedo quebrou só um pouquinho!