Young Karibuchi Hikari is the little sister of Karibuchi Takami, a famous witch who fought against the Neuroi in Europe. Hikari is a hard worker with a lot of stamina, but she lacks her famous sister's magical abilities.  When she gets the chance to go to Europe and fight alongside her sister, she gladly volunteers, but first, she'll have to prove herself by competing with another student at her school.
European skies aren't exactly gentle.
سماء أوروبّا ليسَتْ رقيقة تماماً
Der Himmel von Europa
kennt auch kein Erbarmen.
El cielo de Europa no
se apiadará de nadie.
El cielo de Europa
no se apiadará de nadie.
Le ciel d’Europe
n’a rien de clément, vous savez…
I cieli europei non sono clementi.
O céu da Europa não 
é exatamente gentil.