The earliest and most recent bits are more or less the same;
The entire premise and concept of the being known as Kojanue (who or what or how they were named thst is a mystery to this day), is that they are a literal copy of the known universe that has taken a much smaller shape with the intent that they would learn and "correct" the "flaws" of their sibling, but within themselves. Needless to say they have... not done any bit of that in any capacity. So it's actually more unknown as to what their purpose and function truly is. They simply

Exist.