Granblue fantasy

Apparently, an alchemist who was too brilliant came up with a way to defeat one of the strongest characters in the storyline in ten minutes.

I was generally amused by how she burst into the laboratory, immediately found the necessary records, read and understood all the plans and secrets of the main villain in ten minutes, and then successfully applied the technique he described. Moreover, not on a random primal, but on an astral hybrid that had absorbed the strongest of them.

Lucifer is a copy of a copy...

A phantom of a phantom.