Alisa Mikhailovna Kujo, also known as Alya, is the ice queen sitting atop the social hierarchy of Seirei Academy. Despite her cold demeanor, she often flirts with her crush, but only in Russian. However, he may know more than he lets on.
I figured it was 
just the usual outburst.
Ich hielt das für einen deiner Anfälle.
J’ai cru à une énième crise.
Pensavo fosse uno dei tuoi soliti sfoghi.
Ну так ты же всегда жалуешься.