Reiju is an empowerment usually taught once one has completed the four levels allowing one to become a master, and has shown their master they are ready. There are no secrets in Reiki, but giving Reiju places that person in a spiritual position that requires a pure connection to the pure Reiki vibration. The person should be fully aware of what they are doing and why -- the same attitude they have when they honor another by inviting them into the light through an attunement. Reiju is a wonderful empowerment that has been changed in form by many since it was first used by Mikao Usui; but it still is received givng the person the energy that is needed for their journey and nothing more -- if given correctly in compassion without attachment to any outcome. As with anything once the student is ready the teacher will appear.