From Shoujo Crusade:
Mioko is a pretty Japanese-American girl. But the problem is, she can’t speak english at all. Her foreign looks make people think that she’s fluent in english when she can only speak Japanese. One day she meets a Japanese boy who speaks fluent English. Too make matters worse, he steals a kiss from her! Infuriated, Mioko goes home and is surprised to see Rei, the guy who kissed her. But wait... they have to stay in one roof from now on? What will happen?