First, Raku Kei represents the way of the fire dragon. Furthermore, it constitutes an ancient science of self-improvement. Additionally, historians trace the origins of Raku Kei directly to Tibet. Specifically, Tibetan Lamas used calligraphs to encapsulate healing energy concepts. They recognized that drawn symbols always produce low-frequency waves. Consequently, the human body naturally detects these subtle energy waves.

Moreover, monks painted these large calligraphy symbols on monastery walls. Subsequently, the monks meditated deeply in front of these hangings. Therefore, these images provided a strong focus for mantric work. Also, this focused chanting resonated perfectly with the sacred symbols. Next, meditation participants sat on a four-legged stool. They placed this stool inside a large oval earthenware container.

Furthermore, this specific container represented the etheric egg or Akasha. Additionally, they filled the large container with several inches of water. Specifically, this water represented human emotions during the meditation practice. Moreover, masters taught this exact esoteric science to initiates verbally. Consequently, this verbal tradition eventually disappeared over the centuries. However, Usui discovered the Sanskrit text identifying these techniques later. Specifically, he found these sacred texts during the 1800s.