Originally Posted by
Caine
I know I probably am wrong with my guess, it is quite stupid, just tossed a random idea out.
The logic is that the shield hero /class/ is inherently weak, not the guy himself. No amount of levels will help and shit like that. They need a way to beef him up, but can't give him a weapon or anything - so they decide to give him the "Curse Series" which I bet your ass is some sort of Magia Erebeaesque pseudo-evil powerup. To give it to him they need to make him hate everything, so the princess proceeds with her genius plan: betray the pussy and make him miserable!