Shinobi no Ittoki

Ittoki Sakuraba had no idea why his family and friend, Kousetsu, were taking his safety so seriously. Kousetsu was always following him, watching him closely. But when Satomi Tsubaki, an adorable student from his high school asked him out on a date, he soon found out why.

Tsubaki had planned to assassinate him, but his uncle and Kousetsu, who had hidden their ninja attire, stepped in to protect him. Ittoki's mother then revealed that he was the 19th heir of the noble Iga ninja clan and was targeted by their rival Koga clan. In order to stay safe, he enrolled in the Kokuten Ninja Academy and began honing his ninja skills.