I am newish here, so if this has already been discussed please just link me to it or whatever.

What is the difference between youki and jyaki? And where does reiki fit in? I used to think that jyaki is basically demonic energy manifested eg. visible blast of energy etc. and that youki is the invisible demonic energy without 'form' eg. kinda like the aura or whatever. And that Reiki is the holy/pure equivalent of jyaki. But I'm not as sure anymore, not that I was completely sure before.

Anyway, any explanations and opinions would be helpful.

This is just my personal opinion, since I haven't made any actual research (bad me!), but I usually see youki as basic demonic energy, kind of similar to aura. Reiki then is the holy powers. Jyaki, as I see it, is demonic energy that is malicious in nature and thus associated with evil and malevolent beings.