Kubera

Well, you pretty much can guess the significance of her name to some degree.
With everything that goes on in this world, we can deduce from the god summoning spell that assigned words are important. Thus even speaking it can kill you. So, her actual name (insert) preobably acts in a similar way as "hoti agni" or any other spell in that it involves something with power, but as a name she isn't drawing it but rather possesses it as part of her existance. The catch probably is that it isn't one way. It's likely that as Leez is a weekness to her namesake, or, that she may represent some cross potential of existance that can be exploited or used to replace the inital. <- pure unrealistic speculation on that last piece. What is more interesting is the nature of her family. We were told that ALL of her family had that smae odd strength, so it leaves the question of whether her strength is genetic, or were the other members of her family also namesaked? We are better off learning about her family to learn this, rather than the mangaka just showing it directly.

Red sky... damn.