Outwardly a dedicated teacher from the Land of Wa but secretly a master-level ninja from the infamous Iga clan who shared his experience and wisdom with many young pupils before arriving in Tokyo. Specializes in what's typically known as shadow cloning, except rather than creating an afterimage of himself through dextrous movement, 

. He is able to do this because he's not actually human, but rather a type of supernatural being known as Rokurokubi, Hitoban, or Dullahan, depending on the country