Ninjutsu’s history is full of mysticism and stories about the biggest warriors in feudal Japan. This legendary warriors cultivated the art in an extraordinary way most of it in the golden era of ninjas, which is EDO era in Japan. Basically ninjutsu is based in the art of Chinese fighting, which with the help of the great book "The Art of War" by Sun Tzu tell us how this book about strategy and spying helped to develop the ninja’s mind. Continually ninjutsu was based in the mystic knowledge of Tibetan Buddhism, and the teaching of great Indian masters. That’s why most of ninja knowledge has relatives with the Tibetan philosophy, the BIG importance of our mighty God. The knowledge the superior understanding of every little thing on this planet having as open mind over our human life in total, the history of our race in general and the beliefs of new level through life, even here and after life. And as we say the big base of ninjutsu is spirituality, for our school more than physically the importance of spirituality is about 60% over the 40% of the physical even if everything must to be based in balance by the knowledge of Yin Yan. But do you think life is more material than spiritual? Esotericism is also a big part on this way of life, ninja must have believes over the supernatural staff in this system of life, even believing in UFO’s, ghost, beliefs of different kinds of energy and much more in the subject of esotericism. Its considerable that the existence of ninjutsu goes back 2000 years ago in the beginning of the nijnjutsu’s roots. Ninjutsu is deeply related with Japan’s history and more in the XII and XVII century this is because the big events of that part of the Japan’s history. With the knowledge of Tibet and India, developing all in China and basing in Japan. When the "knowledge" reached Japan, it was developed with the warriors of the wood named YAMABUSHIS. These warriors were big organizations in Japan with higher knowledge, which gave them a look of powerful superhuman beings, for other people they were Tenku which means half man and half crow, their superior level of understanding gave them a look of super human. It was 774 of our era when a prince born, this little boy by the name of KUKAI was meant to be one of the most promising roots of our modern ninjutsu. At the age of 15 he went to a college, at 18 he realized what was going to be the main point of his life. After a retirement of 6 years in SHIKOKU, dedicated to the doctrine, he departed to China with his best friend and pupil Saicho. There he dedicated himself to grow spiritually with the help of masters from India (Cachemira, Hanya Sanso and Munishuri Sanso), beginning to develop the study of mantras (shingon: right words), and the mudras (kuji kiri: nine fundamentals position of the hands). At the same time he studies the big "mandalas" between the material world and spiritual world. Which consist the main point of what is the Shingon School. In Tcho- An, then the capital of China, there he studies philosophy under the direction of KEIKAWA AJARI, a pupil of the big Bodhidharma. Concludeing his studies in China he returned to Japan where he built a big temple in the mountains of Kyo-San (Kyoto). There until the end of his life he begun to develop and understand more about of what now the occidental world calls spirituality in reference to the spiritual life. From his philosophy and conjunction of his knowledge he showed the lineaments of what would become one of the most dangerous arts ever invented by mankind. It’s important to say that even with the most rigorous technique and practicing it would never be possible to create the real art of ninjas. Just the deep knowledge of hypnosis, and the dominion of parapsychology science, the perception of the extrasensory, the ability of levitation and many more tricks combined with the magic opened the door for one of the most mystic warriors on this planet. Ninjutsu today shows us how we must be to reach a better contact with GOD and to change other people’s lifes following an open mind having a good heart, which in Japanese would be translated as KO NO KOKORO.