Unity anime shading.

Hello fellow devs!

I’ve been looking into this topic for some while now and I browsed through all the threads to see that neither has reached a conclusion on how this should be done.
The basic goal is to deliver a fully cell-shaded, basically anime look into unity through shaders and texture tweaking.
My theory is that you take a texture, posterize it in an image editor, then use a toon shader on it in unity, but this is still not enough for
full look, and another issue, that it probably wont work on terrain since it has special shaders (I know its possible to use a different shader for terrains, but when i tried it just messed up the overall terrain textures).

Now if you dont know what exactly a cell shaded look is, im talking about this:

(Sorry for bringing this one game up, but i think it resembles what look i need the most)

So what are your thoughts on this? Is it possible to do in unity? If yes, how?
Thanks in advance.

That just looks like a bog-standard ramp shader to me.