The story takes place in Huanli (the Year of Dazzling) 3015. D’natia and Kōran, two countries fighting for supremacy, are causing the world to be torn apart due to the constant war. Amidst the strife is the island country Nil Kamui, which has lost its independence. Red Dragon, the guardian god of Nil Kamui, goes out of control. Will the island country be able to regain its independence? The main character Ibuki is a descendant of the royal family of Nil Kamui. He is the most pure of heart at the beginning, but learns to accept the consequences of his choices and actions. He has the power granted by the Red Dragon. Eiha is Ibuki’s guardian who is fused with a demon and companion Val. She has the desire to protect Ibuki as she has promised to Mashiro, Ibuki’s chilhood friend. Ibuki, together with his guardian and companions stride on a journey to stop the rampaging red dragon.