Amnesic?

From what I knew about the ancient war, there were two camps, the demonic gods against the supreme.

History said that it was the supremes who had won the war, but Ignis and the stele tell me the opposite; which of these two sides should I believe? Mystery: history had never mentioned these nine demons which has annexed the other supremes who preferred to live in disgrace rather than die in honor.

This explains why Ignis and Keranos's other subordinates have such a hate towards these supremes. But it doesn't explain all the questions that weigh down my list of questions.

On the other hand, Celestia's presence in the castle, and her proximity to Ignis are all the more bizarre and worrying. Did these two know each other?

One last point to note; Keranos is the god of storm. His name, like that of most ancient gods, has been altered by these evil demons. To be capable of such a thing, I see only beings capable of that, the game masters.