Quest: Fathoms Below
Location: The Ruby Sea - Sui-no-Sato x21.2 y19.8 x-2.0
NPC: Kurenai
Steps:
1) Complete the Dungeon Battle
2) Return to town to talk to Kurenai
3) Inside cutscene after Kurenai says;
Kurenai: PLAYER, now you know everything. I hope you do not think any less of me for my lie.
Kurenai: シオサイ。
私はこれから、スイの里の外へ参りたいと思います。