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

Alisa Mikhailovna Kujou, nicknamed Alya, is a half-Russian beauty with silver hair, at the top of her class, student council accountant, and completely unapproachable. She's taken to reprimanding the slacker who sits next to her in class, Masachika Kuze — a geeky, unmotivated, and unexemplary student who couldn't care less about keeping up his grades. Secretly, Alisa holds a certain fondness for Masachika, only revealed by the occasional Russian muttered under her breath that no one in her class can understand…except Masachika! He eavesdrops on these embarrassing revelations, pretending to be clueless, all the while wondering what her flirtatious comments actually mean!