Trinity smiled and nodded. " Her name is trinity, I'm sure you know by now but another field trip was ruined. We were going through a castle protecting the archeological team, you know because it used to belong to witch. When we were attacked by this guy, he looked like he had been brought back from the dead by a necromancer. he was way to powerful for any of use to defeat. So I pulled a sword that had been sitting in this stone for a hundred years ... probably. And used it as a weapon. We managed to fight him off but here's where things get weird. The sword turned into trinity. I though it was just the name for a sword when that guy was like " Get you hands off trinity bwaaarrr! " " Trinity decided to chime in. " I fall asleep when I turn into a weapon, or vice versa... I think? " " She has no memory you see, and if we let her just go that witch is liable to kill her. So I thought we should set her up at the academy. "