Chiriku using the chakra.
The Gift of the Hermit Group (仙族の才, Senzoku no Sai) is a special kind of chakra used by the ninja monks of the Fire Temple. It requires daily, unrelenting training to master. This chakra is required to unseal the Sealed Iron Wall granting access to the Fire Temple. It is also required for the technique Welcoming Approach: Thousand-Armed Murder.