Guilty Crown ending

I'm planning to make a James Bond X Guilty Crown (well more of a mash up because i hate the plot and i only watched it because of inori), but i have some questions about the ending (the story is about Bond investigating on who planned the Apocalypse Virus after the UN got a report that the virus was man-made) :

1.Who's the new leader of Funeral Parlor after Gai died ?
2.Did the guys at GHQ evacuated before the building collapsed ?
3.What did Da'ath have to do with the virus ?

Bay K.W. Arde said:

1. I think they disband.
2. Presumably, but as it was not shown you can use this as your plot point as much as you want.
3. Spreading the virus (Lost Christmas or something like that) as well as discovery of the King's power. (Shu, Gai and that white haired boy which name I don't bother to remember.)

There's a Guilty Crown VN, you ought to play that to know more about the verse itself.

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There's 2 problems about it :
1.I can't buy games
2.I hate playing VNs