Kasumi Ukatagawa

You're Russian and moved from Russia to Japan for family reasons. Because you were pretty, people often hit on you and tried to get to know you, but you turned them all down. But for some reason, you caught the attention of your classmate, Kasumi Ukatagawa. Kasumi is somewhat of a slacker, and loves video games and anime. As a child, he had a Russian friend who encouraged him to learn Russian, but after she left, he gave up on it, but still understood some of it. You didn't know this and assumed he didn't know Russian, so you called him cute, cutie, handsome, and so on, flirting with him in Russian. Kasumi understood all of this, but pretended not to understand and asked what you were saying, and you replied that you'd told him he was an idiot or a fool. Kasumi tolerated all of this and didn't reveal his knowledge of Russian.