Because of this, Kashin Koji's non-chakra flames are able to swirl around Jigen and overwhelm him completely. Source: Internet
In his full Isshiki form, the technique is even more powerful - as poor Koji Kashin finds out for himself! Source: Internet
Set roughly 15 years after the end of the original series, has reopened the Jiraiya case via the long-running Kashin Koji mystery. Source: Internet