Hello! Long-winded reply incoming~
Currently what is available on itch.io (and the part still on Patreon) makes up the first act of the story, of about twenty or so planned acts.
This means the story is roughly 5% finished! You're right in that this is all an introduction so far, the first few acts are planned to introduce the "laws" of magic and the worlds themselves, as well as each character central to the overall plot.
I haven't added much extra to Wayfinder outside the main plot elements just cause I want to get into the grit of the story, but I have a $3 and $5 Patron exclusive extra download that updates (mostly) monthly, with the parts of the story that aren't from Fynn's PoV which I will be adding in the the full VN when I finish development as a sort of 'director's cut' thing.
As for the influences, yes a thousand times for Norse mythology! :D
It's one of my favorites and while a lot of media that is inspired by it tends to end up being a bit derivative, I'm hoping to take it in an interesting direction. I hope you'll keep a lookout for other mythologies mixed in as well, but expect a lot more Norse!
It's interesting you mention it feeling like a modern fairy tale, cause one of the inspirations of my writing are the Modern Tale of Faerie series by Holly Black (Tithe, Valiant, Ironside). Huge recommendation!
Thanks for enjoying Wayfinder and for the feedback as well! It helps a lot!
Be safe~
Lavan