Rin looked amazed "thats an ancient Arcane relic if im correct, it manifests your magica flow into a physical form".
Rin once again pulled out his pad and started to sketch the blade. "i wont tell anyone, but if its ok with you maybe later on you would answer a few questions i have about your blade and you?" 
Rin was still sketching away while he was talking and he had an energetic aura about him, almost like and adrenaline rush effect.