Hm, reading this topic I get an awkward feeling, that Guts could do better trying to find a cure for Casca;
1. If Schierke has no problem with diving into Guts' consciousness, why doesn't she try to dive into Casca's? It's possible everywhere, not only on Skellig.
2. Remember Sword of Berserk's plot - canonic, written by Miura? In this game Casca had a glimpse of consciousness, because she ate/assimilated in other way, I don't remember, the mandrake. Now I think why didn't Guts cling to that idea, which would be perfect temporary cure for Casca, keeping her lucid and sane during the way to Skellig - their adventure would be safer, faster, and less Beast of Darkness-stimulating.
1. If Schierke has no problem with diving into Guts' consciousness, why doesn't she try to dive into Casca's? It's possible everywhere, not only on Skellig.
2. Remember Sword of Berserk's plot - canonic, written by Miura? In this game Casca had a glimpse of consciousness, because she ate/assimilated in other way, I don't remember, the mandrake. Now I think why didn't Guts cling to that idea, which would be perfect temporary cure for Casca, keeping her lucid and sane during the way to Skellig - their adventure would be safer, faster, and less Beast of Darkness-stimulating.