Quoted By:
Omega was actually a concept art for Lilianne she was supposed to debut with Irys but something happened and they were forced to scrap it all. This is why Omega had such a prominent reveal and then was suddenly hushed away.
The Council Delay was because Lilianne was ready to come back which is why the Omega thing during the Council de but was so hyped up. They were trying to give the 2nd Vsinger a boost in hype... but she never debuted. This is why Omega became such a meme including distractions like pronouns, and the spoopy cryptic posts. Basically Cover had an intern shitpost on the account so no one would be the wiser.
Worse yet Lilianne was actually a good friend of Sana. When Sana said her Dog died she was referring to Lilianne who she could not mention which was the reason for her long hiatus followed by her even longer hiatus as she had a mental break down not being able to cope on stream eventually leading to her graduation.
This is also the reason for the extreme delay in Gen 3 debuts and why it seemed like they were trying to shove Tempus down our throats. Tempus Gen 2 was an emergency Gen to keep us distracted.