NaberiusBuster

Failnaught is on Claude, and he went home, so the Agarthans can't get that one. Areadbhar was on Dimitri when he fell, so the BESF should have retrieved that one. We don't hear anything about Nemesis in the CF ending, so it seems like all the Crest Stones (Noa's and Timotheos' in particular) were also recovered by the BESF or were destroyed in the fire (a possibility confirmed by Jeralt's journal). You have that all messed up. Edelgard is the most merciful of the lot. She isn't going to kill kids ever. Dimitri is only kill happy when he is psycho, otherwise he is on par with Edelgard. I'm unsure of Claude, but I'm leaning mercy over slaughter. Rhea would kill them all because she doesn't know what mercy is. Byleth is all over the place, as the Lord he is with effects how he acts. CF!Byleth only exists because he is merciful, AM!Byleth only engages in mercy kills and has Sane!Dimitri to learn from, and VW!Byleth and SS!Byleth have the Ashen Demon return with a vengeance. Solon kidnapped Flayn (yes I believe DK is innocent of that charge) to make the Imperial Demonic Beasts. Did you notice their glowing Crest Stones, which makes sense when Flayn is the "light" dragon. Nemesis is dead buddy, not sleeping. He isn't a Nabatean. Nemesis awakens in VW because TWS were successful in stealing the Crest Stones of Noa and Timotheos (the ones which were used in the Dark Creator Sword) during the Holy Tomb raid. Edelgard acknowledges the success herself after the battle ends, and she only says this in VW. I have a hypothesis for why Rhea goes berserk in SS but not VW. Rhea is suffering from the effects of Solon's Remire madness illness, which she could have been infected with during her confinement or after the war was over thanks to laxer security at the Monastery. The tell tale signs of this illness are normal illness symptoms followed by a sudden violent madness (potentially magically triggered, as all the victims turned violent at once in the Remire incident) where the victim's strength is magnified (civilians being a serious threat to armed soldiers in chapter 8.). You can identify the victims by the pulsing veins on their face, and you notice something is also very wrong with the Immaculate One's form in a similar manner. Solon himself was investigating the Cardinals back in chapter 2ish, which is another point in my hypothesis's favor, as he seems to have planned for this contingency all along.