No matter what, Zeus had once promised to be the guardian of oaths. If possible, he would rather not see Hades bear a grudge against the Styx River, as it would put him in a difficult position.
After all, deep down, the Divine King did not wish to have a falling-out with the lord of oaths for the sake of Hades.
As for the Nether Moon, that was an easier matter to deal with. Zeus could simply stand by the wall under the pretext of 'giving face to the Primordial Gods', watching Hades and his neighbor become enemies without compromising his own authority.
Conveniently, Poseidon had his own foster father as an adversary in the vast ocean. If the Underworld could also have an existence to counterbalance Hades, then nothing could be better.
"Boom—"
Lost in thought, Mount Olympus was shaken for the third time. Zeus knew that he should do something now. Under the watchful eyes of the gods, the Divine King continued to speak:
