"Eren?"
Nina and Levine soon found out that Eren had stopped moving with them. They looked back to see Eren had stopped in his tracks. He looked like he had just found something shocking.
Saying that Eren was shocked was an understatement though. Sages were the pinnacle of existence for him for the longest amount of time. He knew that there were more powerful beings than Sages outside of Anfang. But he had never stopped to think about the extent of their powers.
The butcher tried his hardest. But he still couldn't wrap his head around the amount of accumulation one needed to face 100 Sages at once without breaking a sweat. As a result, his brain was short-circuited which made him stop in his tracks.
Alephee on the other hand thought that she had undermined the existence of Demon Princes by comparing them with Sages. She was sure that all seven Demon Princes would take offense if and when they learned of her doing.