Hitomi couldn't stand living with her mother and her boyfriend anymore. She decided to go to Kabukicho to see her older sister Onee-chan, who works at a hostess bar.
Onee-chan had texted her "COME TO KABUKICHO!", but Hitomi had no idea where she lived.
When she reached Kabukicho, Hitomi was led by a mysterious cat who can speak to a large statue called K-chan. There she sees an image...that K-chan is destroying the city.
The cat, Chibi, tells Hitomi that the image will come true in a year, unless she fights to prevent it.
Now Hitomi must find the three other "Warriors" to stop K-chan from going berserk!
While searching for the Warriors, Hitomi comes closer to her sister's secret...what does Onee-chan has to do with all this?!