The story follows Hikari, a girl who has mysteriously lost her sense of happiness. As she grapples with her growing sense of dread, her cheerful classmate Kage offers to help her search for her lost happiness.
In her sleep, Kosuzu is contacted by Chimata Tenkyuu, God of the Unowned, to stop the evil plans of the Moriya Shrine.
Suzuki Kokona, 18 years old. Despite putting her all into everythging she does, she gets dumped by her boyfriend. Set on getting revenge, she goes to her college\'s tennis club\'s party in the hopes she will be \"brought back home\" and her boyfriend will get what he deserves. This is a story about revenge driven by love and tennis.