From the tenth mural onwards, it told the tale of the Ruler of Gods descending upon the mortal realm to bring a few talented mortals back to Mount Pantheon, into the Inner Palace and granting them Godhood.
Slowly, the number of mortals being granted Godhood by the Ruler of Gods in the murals grew higher, and Mount Pantheon began to fill up with immortal gods.
The originally peaceful and harmonious gods began take hostile actions due to the ascension of these new gods.
Finally, a war erupted between the original gods and the new gods.
One of the original gods was dissatisfied with the Ruler of Gods continuing to create more Gods, but after he failed to persuade him otherwise, inside this exact inner palace, he managed to manipulate the Ruler of Gods into taking off his God Armor and putting away his God Staff. Then, he attacked the Ruler of Gods, killing Omega.