Or..
Ryu's Realm Heart had long since left the path of normalcy long along.
Well, it was hard to say that there was a "normal" path for Realm Hearts in the first place. Technically speaking, they all followed their own unique paths, each one having different Laws to establish themselves upon.
As they matured, they would naturally begin to deviate along their unique paths, and thus begin to shift and change along with those laws.
That said, they all had a natural sort of progression, although said progression was incredibly slow.
And that was part of the oddity here.
Usually, those lucky enough to stumble onto Realm Hearts would all die long before said Realm Heart could even begin to blossom into maturity. And that was even if said person managed to become a Dao God.
The length of life of worlds was so far beyond that of living beings that they couldn't be compared at all.
And therein lay the problem.