Alya Sometimes Hides Her Feelings in Russian, Vol. 1 (manga)

Alisa Mikhailovna Kujou is Seirei Private Academy's 'solitary princess,' a half-Russian beauty who treats everyone with an ice-cold attitude. But there is one exception-Masachika Kuze, her nerdy classmate, is the only one who gets to call her by her nickname, Alya. And when she mutters in Russian under her breath, pretending that she's telling him off, she's actually gushing over how cute he is! It's a good thing Masachika doesn't speak Russian. After all, if he was secretly a Russian expert who could understand every embarrassing, flirty line coming out of her mouth...That'd be the worst, wouldn't it !