[ Wwwweeeeeeeeelp. Miach is also going to step back, examining her hands as she goes to see if any of it got on her during her attempt to open that locker. She's still alive, so that's uplifting and hope-inspiring on that front. This would be a truly dumb way to die and she really doesn't feel like following Renji's example. ]

We've never clarified the nature of the impurity either, have we...? Isn't it entirely possible that it does not simply move and occur at random as initially thought and instead has a kind of purpose behind it? This may be a long shot, but if M wants to get rid of it and yet something is defending it from our attempts at study....

[ Then is M even who is making this happen? Who knows anymore. ]