After escaping from the Taiyou Palace, Shizuki Kasuga begun her life as a warrior princess after her parents were executed when she was young and lived in a village with her two childhood friends. During her training, she learned about the existence of the infamous mountain god of the North Mountain who has been sealed away for a longtime. However, things didn't go smoothly as it expected after 'accidentally' unsealed the god by her unknown power. Shizuki had no choice but to take on a new adventure together with the mountain god named Kazuya, in order to focus on their respective objectives: the path to stop the war of Kagutsuchi and the path of revenge against his former lover who betrayed him in the past.