Ink and Watercolor. Usiu Reiki Symbol.Many Reiki Masters consider the Reiki symbols holy and persist in the old Reiki tradition that they must be kept secret. The symbols should only be available to those who have been initiated at the Reiki 2 level. My beliefs differ obviously since I am posting this. I don’t believe anything of value should be kept secret and only for a select few. And who could keep this secret with the net now? lol Reiki has changed over the generations and evolved into a more common practice. Much more common that most realize.