@KDY13 Yeah, if I had to guess, a sword can be made by a blacksmith who has a grudge, but that likely only opens up a space for grudges to enter, like giving a sword a gem slot in a game. For this situation, the sword was made through sacrifice, but also with grudges for pushing the blacksmith's wife to sacrifice herself to craft the twin blades. That could've evened out the positive and negative energies, but the way the sword ended up being used is what created the cursed sword we have.