17 year old Nanaka Kirisato has it all: she's beautiful, she's bright, and she's at the top of her class. But somewhere along the way, Nanaka los ttouch with her classmates-including her best friend Nenji-who think she's become an arrogant snob! One day, in the midst of an argument with Nenji, Nanaka falls down a flight of stairs and gets seriously injured. the diagnosis is acute amnesia, and now Nanaka thinks she is six years old-and a magical princess! To add to the fun, she believes that Neji also made a wish to become an adult. Let the magical misunderstandings commence!