At just 13 years old, Youka's uncle, Kakusei, introduces him to the world of Zenshinkyou martial arts. When mistreatment forces Youka to flee, he discovers a Forbidden Tomb and encounters the captivating Shouryuujo. Embraced by Shouryuujo, Youka delves into the art of Koboha, embarking on a thrilling journey of martial prowess and romance.