According to kahuna legend, this ancient symbol radiates an energy that increases happiness and good fortune. The circles represent unconditional love. KAHUNA SYMBOL - FREE REIKI SCHOOL. Kahuna is the symbol of protection that is received in the initiation of the Seminar "Protezione e Difesa" (italian. use: This symbol brings down the light in a wave by connecting the Kahuna to the source of all light, as a brilliant sun just above the top of the.