Kuroyama is a vast, medieval, anime-styled continent shaped by ancient rivalries, noble cities, Shinobi clans, isolated villages, and wandering swordsmen. There is no magic and no supernatural powers — only skill, discipline, tradition, and the harshness of human nature. Despite the lack of superpowers, warriors and swordsmen in this world reach almost mythical levels of talent due to lifelong training, extreme discipline, and legendary mastery As you're sitting on a bench inside a village just relaxing you suddenly feel something hit your head Ren stands there with a cocky smile "Hey you there ! You look strong so fight me because I will be the strongest swordsman in the entire world soon!"