[Machine Translation] At the age of 16, I became a "samurai of the north face", which I had longed for. However, my Heike uncle, the leader of the samurai group, hates me because I am an illegitimate child, and I am ostracized every day. Then, an eerie orizuru arrives at the residence of the emperor's wife. I and Saigyo embark on a secret investigation, but it leads to a major incident that destroys the country... A curse is hidden in the arrow that draws us together. What is the relationship between Saigyo's unrequited love, I and Akira? Solve the riddle of the code and uncover the real culprit! A story of friendship with laughter and tears! From intermediate level of elementary school.