Oh what's in a name?

[fencer_x]

So I was advised by certain parties that this might be a topic best served on our lovely comm here!

Dat Nezumi's Real Name

Uh, anything and everything related to this topic? How attached is Nezumi to said real name? Why won't he give it up to anyone? Is there anyone alive who knows his real name? Under what circumstances will he ever tell Shion? Does he think of himself as 'Nezumi' in his own head at this point? He promised to tell Shion his name if he survived the larval eruption (beautiful stuff), so what happened to that?

Would it be something similar to the vaguely Asiatic flavors of the No.6 citizens' names, or something completely different?