The heroine of the story is Tanaka Megumi. Yi Han, whose Chinese name is Li Xi, was born with his sister Tanaka Hui when he was a child. Yuehan, whose Chinese name is Lili, is his younger brother Nanwei. Yinxi {the family name, the girl and her mother's surname, the boy and his father's surname} and Yinxi's childhood sweetheart Miyamoto. Zhuo Sen accidentally picked up 4 cute looking bubbles. The strange thing is that those bubbles have incredible magic power and can talk, so this is also the beginning of the story.