I just seen some videos of that. At least in Berserk, magic doesn't require that you mess with demonic activity to get results. Farnesse is proof that you could be a vanilla witch.Ya'll ever hear of game called Fear and Hunger?
In F&H, I was shocked that they had playable characters having to jerk off, join orgies, or murder just to have an opportunity to pray or learn a good portion of the spells. And even learning the magic from books can drive you insane. Too many instances where a coin toss decides your fate.
This is one world that is arguably equal or worse than Berserk fir the living and the dead.