It’s just a simple question. What are ways to raise your willpower? Is there some other way than just using the Demonstones?
There are a few others, if I recall correctly. At the very least, in the beginning you can choose “Force the servants to part by your very presence.”
That’s the only one I can remember now, without playing it.
There is a second way; if your relations aren’t to bad with the Soulburner (Jess I believe the name is), and if you winter in Elmsvale, I believe you can also raise your Willpower from one of the dialogue choices.