Caizher swam a bit closer to the cores before he controlled a thin streak of his darkness to approach the cores. To Caizher's shock, as soon as his darkness made physical contact with the cores, the darkness entered it as if the cores weren't there in the first place
After checking that there isn't any danger, Caizher swam above the cores. He uses his mana to clear the debris away and Caizher saw more cores
The weird thing is that Caizher can't touch the cores no matter what he does and even if his darkness entered it, he would immediately lose his sense of vision on that darkness as if there is some sort of a force preventing him from seeing anything
In curiosity, Caizher entered the layer of cores that can fit a large number of humans
After entering it, Caizher immediately felt himself falling from the sky. The large body of water around him instantly vanished and the scenery had a huge change
