The answer on how to achieve the Cosmic Realm in a mere week of course lay with…the one Europa called Little Ragnar, and the Ender of Reality that was in the Quasi-Cosmic Realm.
In the past days, Noah had continued to chase these two paths as for the Ender of Reality, he had it devour some of the Cosmos within the Third Reality as he also fed it the Primordial Hearts that he obtained from Idle Mode! This was why even after more than a week and gradually adding more and more Lesser and Grand Primordial Rifts across the Archaic Tribal Lands, Noah's own body was still only at 10 billion Splendifirous Universes!
He was actually putting his focus on the body and Origin of the Ender of Reality that if he raised to the Cosmic Realm…his soul could occupy and use as a terrifying weapon.
This path…Noah was infinitely close to achieving completion in as the Ender of Reality was nearly at the Cosmic Realm. And this was before any fusions!