Carnage Heart EZ Manual OKE control
Just before your OKE enters a battle, press Select to display the options screen. Then, press Select(10) to display a “Manual Control” option.
Bonus music
At the music options screen, hold L1 + L2 + R1 + R2 to access five additional tracks.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art.