With relation to Japanese esoteric Buddhism , the yang/yō-syllables represent the shirtenno (Four Heavenly Kings), with the exception of the “kai” syllable which represents Fudo-myō-o. The yin/in-syllables represents the Godai myō-o. A simple look at the ku-ji and their relation to the prescribed deities shows a very logical pattern. The ku-ji and associated deities form a simple mandara, with Fudō myō-Ō at his rightful and proper place in the center, surrounded by the other four Myō at their respective locations, which comprises the inner sanctum–hall of the mandara. The shidaitenno being of a lower rank–office than the Myō, occupy the outer sanctum/hall of the mandara at their respective positions.