When bubbly eleventh-grader Eimi Yamashita finds out that her parents are relocating for work, she decides to strike out on her own and move into a dormitory for girls. Little does Eimi suspect the exciting romantic adventures that await her there!
Eimi unknowingly makes a conquest of Shimonuiki from the boys dorm. However, she's so wrapped up in her admiration of Wanibuchi that she doesn't even notice. Shimonuki decides to seriously pursue Eimi, and what better way than to get close to the competition?