And it was for a good reason, the sword girl might be tame and bubbly when it comes to Daimon, but Narasha is quite wild when it comes to fighting, she is an entity that was born out of Disaster which was created to be the ultimate magic weapon after all, so she should have had a warmongering personality.
However, Disaster was an unstable monstrous unique magic sword from the very moment of its creation, it was too much for the newly born Narasha to control, it also didn't help that the bastards that created the material used for Disaster used some really dark processes.
And then the blacksmith who stole said material, also did who knows what in order to create the "ultimate" magic weapon, unfortunately or not depending on how you view it, all of it remains unknown up to this day.
