He was thinking for a moment, since it's a complex topic that even he had a hard time explaining. It was something he grew up with, so it was very much second nature to him.

"It's-- It's kind of like your ghost powers. I can use it as much as I want, but over using it can cause exhaustion and lead to not being able to use it. Agh, I don't know how to explain this! I could just-- show you?"

Maybe that might be easier. Who knew how that would look, though given, he was dealing with both his spiritual energy and youkai energy.