RPG Insanity

Ok so.. In subquest 13, Rita (In Navia Town) wants me to defeat the "monsters" in Poncham Shrine and then report back to her, but... here's the problem, I have no idea what monsters she's talking about. I initially thought it meant killing random encounter monsters at the Feral Realm Border, so I tried to grind some.. but then I was having doubts.. so.. what am I supposed to do exactly?

Woah maybe caught this too late but make sure you’re hiring the cave up north where you first started the game and you’ll find a monster at the bottom. Once defeated Allen walks on screen to meet you.