Kawashima recently turned 20 and failed his college entrance exams twice. Because of this, his parents kicked him out of his house. Now living in an apartment, he wishes for romance in his life. He went to an all-boys school so he never encountered many girls. While un-packing, the next door neighbor happens to break the wall dividing their rooms. What's this? The neighbor is a girl? What will happen between the two now that there is no wall?