That sure is a lot to take in all at once! But Angeal will be able to see it on Avan's face when he peels the intellectual devourer off of him: his primary takeaway from what he's seen is anger, a righteous fury at this tragedy that never should have come to pass. The fierce scowl would make for a comedic contrast with the pink bandana tied around his hair to keep it out of the way in the kitchen, if it weren't so uncharacteristic.