Every 30 years, a new princess is chosen from the Hime family to serve the Hayagami. The time has come again, but over these past years, records state not a single female has been born, save for one, the 15 anno old Arata.
Ninako curiously explores the meaning of what "love" really is, and is surprised to feel a colorful range of emotions as she grows closer to the school heartthrob Ren, who is involved in a longtime relationship.