Knightroid

Battle Overview:

Immediately go into a Serene State of Mind to avoid her physical attacks. Once she exposes her breasts, you must keep reserve some SP to restore your health. Gnome is not required for this fight, as her bind moves can be completely avoided with your Serene State.

This fight is also beatable on Hell difficulty, using the same strategy as stated above.

If Luka submits to her attacks, she rapes him in front of all of the imprisoned women in the Colosseum. Once depleted of his energy, the Knightroid enslaves everyone. 