In the ancient Chinese setting of Keishuu, a high school student named Sonshin despises the war-torn history of his city. However, his disdain takes an unexpected turn when he starts experiencing bizarre occurrences following a troubling dream. Suddenly thrust into a perilous situation where a general from the Three Kingdoms, Gien, is intent on ending his life, Sonshin faces imminent danger. In a critical moment, a mysterious and alluring woman intervenes, altering Sonshin's path dramatically. As Sonshin grapples with these surreal events, what trials and tribulations lie ahead for him in this unfamiliar and perilous world?