Pass through the Dimensional Gate to reach the Killing Grounds, then speak with Eurice.

Show Quest Info

Introduction

Muto discovered some useful information about the Guardians of Fate while consulting the ancient texts. There are four of them; Scarlet Phoenix, Emerald Dragon, White Tiger, and Obsidian Turtle. Muto has suggested that you use the Dimensional Gate to reach the Killing Grounds, where the Scarlet Phoenix is said to live.

NPC Dialog

According to the ancient text, there are four
Guardians of Fate: Scarlet Phoenix, Emerald
Dragon, White Tiger, and Obsidian Turtle. It's said
that they once guarded some ancient mysterious
power, but now they each preside over their own
domain by Odin's decree. One of the Guardians, the
Scarlet Phoenix, is said to live in a place called the
Killing Grounds. You should go there first; you can
reach it through the Dimensional Gate.

Quest Completion

...
(It doesn't seem like she's able to speak.)