Frontlines FAQs Guide.

[Zyphione]

For both Frontline and the Wolves’ Den, physical defense and magical defense are nullified, and battle balance was adjusted based on this. Due to this, Foresight, Protect, and other actions that boost your defense will not have an effect during battle.

I will be compiling your feedback and forwarding it to the devs regarding having this information appear in-game.

I save you the trouble