Caphras's Clue I

The immortal alchemist, Caphras NPC Knowledge, appears to have originally been a follower of Hadum. According to Caphras's journal NPC Knowledge Item, he knew that the meteorite that fell in the west of Calpheon was a "living Black Stone NPC Knowledge Item", and he sought to gain immense energy to awaken it.

It's unclear whether the Cron Castle explosion incident came first, or the awakening of the Blackstar in southwestern Calpheon. However, what is certain is that Caphras NPC Knowledge believed that the Black Stone NPC Knowledge Item, or the Black Spirit NPC Knowledge, was the only way to oppose Hadum.