...could it be a guardian of some sort?Ah!What do you mean by "mine"?!Wave WaveWhat was that?!!Even so, for that mask to be so independent...Koishi vs. GuardianYou merely stole what was dropped!Because it seems you're troubling the person in question.You two, that's far enough.It's probably because Koishi took really good care of the mask, which still had some power left in it, that it reincarnated into a new artifact spirit.Why!?