Powerful New Weapon
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After the last inspection on Aruliel's physiology and all of that, Chaos quickly decided to gather with Belphegor, Erebus, and Edward alone, leaving Abyss by herself, as she gathered with Rot and the other girls such as Lilith and Yuki and went to do her own stuff, as she thought Chaos wanted a "boy's time" with her male allies.
Of course this wasn't far from the truth, Chaos wanted to meet these people as they were his trusted aides in the creation of Abyss gift, her Ring! And well, Chaos had decided to sprinkle something else entirely as well, as he had begun making Abyss a new weapon as well as the ring, just so she could sport it well together, totally not just to spoil her rotten.
"Papa, its almost ready…" said Erebus.
"It has taken a very long time to craft… I am glad my lord is having this gift for his wife." Said Edward.