Quest #157 Inn for a Penny, Inn for an Inny - Stornway Inn
Quest Requirements: Defeat 20 Octagoon enemies
Quest Pre-Requirements: Side Quest #156 Complete; This is a DLC Quest
Reward: Erinn joins your party
This quest begins by speaking with Erinn behind the counter of the Stornway Inn. Unless you've completed Side Quest #156 Erinn will just say something generic and not offer you this quest. The first thing you have to do after accepting this quest is head to Stornway Castle and speak with the King.
After speaking with the King a scene will commence where he explains what you have to do. For this quest you need to go to high level Grottos where you can find Octagoon enemies and defeat them. You need to defeat a total of 20 for the quest.
When you enter the right Grotto you'll get a scene with Erinn (pictured below). Octagoon enemies are actually fairly common in my opinion - they mostly spawn in Grottos that have the Ruins layout, which is the same layout you see me standing in below.
Once you've defeated all 20 Erinn will come out and speak with you again and tell you to return to the King of Stornway and speak with him to claim your prize. Completion of this quest will allow you to pick up the very last one in the series, Side Quest #163.
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