The Reiki Ascensional - 9 degree manual is a very comprehensive document covering all aspects of Reiki. It shows the link between the subtle body and the Higher Self, both used with the healing process. Also how the relationship of the seven main Chakras, their colours, their physical system, also work with Reiki. Also the various degrees of Usui Reiki is linked to the Inner teaching, the four noble Truths and the eightfold path and our total anatomy of the Higher self. This is something to study more deeply to gain good understanding of in the fullness of time.