As he matured, it is suggested that he studied "Kiko", the Japanese version of the healing discipline known as "Qigong". Qigong is based on the development and use of one's own personal energy. Usui wondered if it was possible to do healing work without depleting one's own energy. His studies included medicine, psychology, religion and fortune telling. The Asian Culture has long considered fortune telling a very worthy skill.
Later in life, Usui became the Secretary to Shinpei Goto, head of the health and welfare department. Shinpei Goto later became Mayor of Tokyo. The connections Usui made at his job helped him to become a successful business man and he was also a member of the Rei Jyutu Ka. Rei Jyutu Ka is a metaphysical group dedicated to developing psychic abilities.
In 1914, his business and personal life were failing and Usui spent much time meditating on Mount Kurama where he received his Buddhist training earlier in life. He then decided to enroll in Isyu Guo, a twenty-one day training course sponsored by the Tendai Buddhist Temple located on the mountain. It is believed that part of the meditation practice Dr. Usui participated in involved standing under a waterfall allowing the water to strike and flow over the top of his head, activating his Crown Chakra. It was during the Isyu Guo training that the Reiki energy entered his Crown Chakra which greatly enhanced his healing ability. He realized he had just received a wonderful new gift, the ability to heal others without depleting his own energy. And thus, he began sharing and teaching this new healing skill we know today as Usui Reiki.
In 1922, Dr. Usui moved to Tokyo and started a healing society which he named "Usui Reiki Ryoho Gakkai". This means Usui Reiki Healing Society. He also opened a clinic in Harajuku Aoyama where his students called him Usui Sensei. The demand for Reiki grew and he built a larger clinic in 1925 in Nakano Tokyo. His reputation as a healer grew and he began to travel so he could teach and heal more people. He traveled across Japan teaching more than 2,000 students and initiating 16 teachers. For his efforts, the Japanese government issued him the Kun San To Award for doing honorable work to help others. His life came to an end on March 9th, 1926 when he suffered a stroke while teaching in Fukuyama.
Both accounts of his life are very interesting. I invite you to do your own research into his past if you are so inclined. Personally, I do not feel the need to find out which account is factual. The fact that Dr. Usui discovered or rediscovered the Reiki System of Natural Healing and shared this knowledge with others is what is important. By sharing and teaching the Reiki system, he has enabled hundreds of thousands of people to experience the incredible power of Life Force Energy and many, many lives have been changed because of it.