Apprentice "当学徒" refers to the first initiation rank after synchronising rank, in which refers to the trainee towards mastering the rank of an assassin. They are largely citizens, undercover farmers, undercover factory workers which allows them to work in a non suspecting way. Being an apprentice, they are able to inform their sighted targets to the assassin order and help to take them down or helped to cover the marks by the criminals to see.