The Russian Transfer and the Polyglot

Nihongo ga Hanasenai Russia-jin Bishoujo Tennyuusei ga Tanomareru no wa, Tagengo Master no Ore Hitori
日本語が話せないロシア人美少女転入生が頼れるのは、多言語マスターの俺1人

Adaptation

novel

Tina, a super-cute Russian, has transferred into the class. She is immediately popular but does not speak Japanese, so she is troubled and looks like she is about to burst out crying. In such a case, the only one she can rely on is the main character Iori, who is hated by everyone due to a certain misunderstanding. (Source: Kodansha, translated)