Shinobi no Ittoki

Ittoki Sakuraba, the main character, is an ordinary child who initially believed that ninjas did not exist. He should have led a normal, happy, and fulfilling life... Ittoki was assassinated one day, and he discovered that it was all the work of the Kouga ninjas. Why is Ittoki being hunted down? Because he is Iga Ninja's 19th genuine heir! For many years, Iga and Kouga have been at odds, and Kouga has always desired to invade Iga. Ittoki's only option for survival is to become a ninja! Ittoki has therefore entered the unknown world of ninjas. To become a mature ninja, you must constantly learn, fight, and face challenges. But Ittoki's cruelty is just getting started.