Ninja Girls 5 by Hosana Tanaka
Takes manga fans back to Japan's distant past when ninja warriors roamed the land. But Raizo is just the sort of boy who seems to have no hope of becoming a ninja. Disfigured by a strange horn in the middle of his forehead, Raizo is a complete outcast. But then he meets a beautiful female ninja who introduces him to his amazing destiny: he is the last living descendent of the royal family! The beautiful ninja swears her allegiance to him and promises to help him regain his throne, introducing him to ninja servants and a group of gorgeous, glamorous and super-cool ninja warriors.