User blog comment:JeielYozama/Jeiel Yozama's Paths - Answer Poll/@comment-27036092-20160925141336/@comment-27036092-20160927175617

Hmm. I see. I am truly sorry I did not read it all, only in the big lines. I understand better what happened to Jeiel now...

So, he is resistant to Demonic Energy and mamonos' charms. Interesting. I wish I had this ability natively, but I almost acquired it thanks to various items I've crafted over time. I am still working on a way to extract Demonic Energy reliably from a living organism without damaging or hurting it though (and BTR seems interested in such a process, which is why I'll describe it here).

It is very difficult since you have not to damage anything, in addition to reversing the changes brought by Demonic Energy, restoring the Spirit Energy ratio back to normal, and containing the extracted Demonic Energy. Plus you have to use a consequent amount of Spirit Energy to dissociate DE from the body, minimize the pain caused by the process, give SE back to the body, and need to really focus.

I know it really well, since I managed to do it once on myself and even then didn't even remove all (though almost all) of the DE contained in my body, not to mention the pain I experienced. There was a lot of it to begin with though, so I called it a day. Until I improve the technique, probably never again.

If you ask me why I did it, it was out of my personal choice of non-alignment with either the Order or the Demon Lord. And if you ask me how I got this DE into my body in the first place... let's say a monster almost got hold of me, then a spell of mine went really wrong.