Roan gave one final push with his Dark Element and Sky Energy while Rean's Light Element supported it. The gap instantly widened a few more tens of centimeters, creating a real passage to the prison behind it.
In the next instant, the Abyssal Beast's Main Soul rushed out while it used its power to calm the Spatial Storms around it. Just as it reached the exit, it tried to connect with the outside world's space laws. It did indeed agree to stay in the Celestial Soul Realm for a thousand years. However, it would definitely choose to get itself free if it could.
