Ninja is one of the famous Japanese cultures through Japanese animation or mangas around the world. They are believed that they used some special magic in Japan, however, did they actually used the skills? Research shows that how they worked as spies, and how loyal they were to their bosses. This presentation is going to discuss how ninja worked as spies, their secret real life and beautiful women spies. The presenter is going to illustrate brave shadow warriors who swore on their life for their job.