Lingalind is a land enclosed by the Wall The Wall covers, protects, cultivates, and nurtures the land One day in Edger, a village on the outskirts of Lingalind, a mysterious man named Back Arrow appears
Okazaki Tomoya is a delinquent who finds life dull and believes hell never amount to anything Along with his friend Sunohara, he skips school and plans to waste his high school days away
After surviving an attack from the rival Kouga clan, Ittoki Sakuraba, an ordinary boy, discovers that he is the 19th heir of the Iga ninja Ittoki learns to become an Iga clan ninja and joins the war between the Iga