Those sigils attached themselves to the souls of the four. However, it only lasted a few seconds, as if they were there only to gather some information. Following that, those sigils emerged from their bodies and moved to where the Starlight Energy Formation was located.
Each sigil landed on one side of the formation, north, south, east, west. Well, that was just an example. There weren't really any cardinal directions in the Celestial Soul Dimensional Realm.
The Starlight Energy Formation's runes began to rearrange themselves as many other runes started to appear. The runes in the sigils also interacted with the formation.
The process took a few hours, but ultimately, the sigils merged with the formation and created an entirely new formation in the Celestial Soul Dimensional Realm. It could be used for both things, Starlight Energy and Soul Energy.
From there, they would generate Soul Energy constantly and forever. Or, at least until the twins' group still needed Soul Energy.
