All ten of Cain's dark dragon manifestations entered the Sun Ascension Pool. The liquid fire within the pool usually burned anyone who was not an angel, and even for angels, it acted oppressively, taking pieces of their souls and exchanging them for the Sun Lord's soul force. The only one who had ever shown some level of control over the white liquid fire was Helios, and that was because he was, in reality, an incarnation of the Sun Lord.
If any other dragon were to enter the Sun Ascension Pool, their bodies would burst into flames, and even Immortal Dragons would not be able to survive its power for long. But Cain did not face those problems. The moment he entered the pool, the white liquid fire acted fiercely, its flames rising as if to consume him, but before it could harm him, his soul force was released, unleashing an aura equal to that of Helios.
