Armageddon

Right after the notification was given out, an unidentifiable magic circle spread across the sky and Shiro could only watch in shock.

The sheer amount of mana and divine energy that was being radiated from the magic circle was something she had never sensed before. Compared to when she saw Nyx and Chaos, the magic circle seemed more powerful!

Since the city was floating in the sky, they weren't affected but Shiro could see the earth below them quake.

Mountains started to collapse as large ravines opened up.

Clutching her head, Shiro couldn't help but feel dizzy from the amount of mana and divine energy she was sensing.

Glancing back at the party, she could see that they were also having some difficulties.

Shaking her head, she quickly left the command centre and floated above the city.

From what she remembered seeing when she peeked into Vulcan, the god slayer's memories, this was just the start of the transformation.