Chapter 657: The Concept Of Weaponization 

Erica panted for breath as the flames around her slowly faded.

She was so exhausted that she felt like dying.

Originally, she thought that she was invincible in the sky, but Thirteen brought her down a peg by making Sherry use a special strategy against the Sorceress.

When they were still in the Fractured Heaven, Erica and Sherry both gained Rank 4 Steel Falcon Avatars, while Diana gained Steel Falcon wings as an equipped item.

Thirteen had been teaching Sherry Aerial Warfare because she had never tried it in the past.

The teenage boy had prepared a saddle just for her, allowing her to mount the Steel Falcon's back safely.

There was even a special seatbelt that allowed her to freely use her hands and shoot arrows from the sky.

Fortunately, Sherry was one of those people who didn't have a fear of heights, which was enough to make her an ideal Aerial Knight.