Currently available as a book from MF Books. '--Stupid' Rio, a boy living in a border region, was fed up with the dojo's teaching methods in his village and decided to quit. However, to survive in the dangerous border region, he believed he should learn some form of martial arts. So, Rio began to create his own style of swordsmanship. Despite being told he had no talent, Rio became engrossed in creating his swordsmanship and even completed a secret technique. Unbeknownst to him, this secret technique would change the world-- This work is also being posted simultaneously on Kakuyomu.