Momoka Sendou (nicknamed "Dragon Girl") and Ryuga Kou are childhood friends. Momoka is a martial artist, and Ryuga is a Chinese magic master who banishes demons. In order to increase his power, Ryuga calls on the spirit of a dragon to possess him, but the spirit enters Momoka instead. Now the two must unite forces and fight demons together!
During the Sports Festival, Momoka brings lunch for Ryuga so they can eat together, but Akira isn't happy that Ryuga rejected her lunch in favor of Momoka's. Jealous, Akira calls on three impish wind demons to break the couple apart.