About this “great cleansing” (holy shit that scared me as fuck as I read it)… We can see that this “Im-sama”, as the king of the world, has the right to choose who will be extinguished from history, it’s not only killing someone, but to make everything that’s possible to make him disappear from all minds.
The word “light” is very important here I think, it may be metaphorical as “someone who gives hope to others” or as someone’s “life” simply. Put with the image of Vivi (which Im doesn’t seem to hold anymore when he goes to the throne)… Her picture is the only one which is not cut but Luffy’s, Blackbeard’s and Shirahoshi’s are. Does that mean that Im doens’t consider they deserve to disappear yet and his goal is Vivi of that they have to be eliminated but Vivi is another special case? If she had to be put in danger, I think it would be because of her family history (“traitors” + Cobra wishes to speak about the poneglyphs). But she hasn’t made anything else (except being in Luffy’s crew) which would make of her a target? I mean, Shirahoshi is a antic weapon AND also an ally of Luffy, why would Vivi be the center of attention ? It has to be important.
I think that through her, it is Alabasta which could be targeted, as well as many other allied countries of Luffy. As the gorosei ask for “their name” , and that they are willing to do a “great cleansing", it may mean that history may repeat itself with the forgotten century. Those who are willing to oppose the world balance (which may include Fujitora, the revolutionnaries as well as Luffy and potentially Blackbeard) should be killed and forgotten. It would imbalance strongly the world (as all institutions would be unbalanced [royalties, pirates, revolutionnaries, marines]) but for a even greater balance after.
However, Shirahoshi and Vivi are at the Reverie, which makes of them very easy targets, but I think that neither of them would die, as Neptune and Cobra would no stay without moving (as well as Rebecca and Riku and others) and killing them all is not possible right now.
In the end it’s very mysterious and scary. Well let me know what you think about it!