This guide details the entire Irina and Edgar questline, including key steps, locations, and potential outcomes.

Starting the Quest:

1. Encounter Irina: Find Irina sitting near the Bridge of Sacrifice on the Weeping Peninsula. Speak to her, and she'll mention her father, Edgar, being trapped in Castle Morne.

2. Deliver the Letter: Accept Irina's letter to Edgar and head to Castle Morne.

Castle Morne:

1. Find Edgar: Locate Edgar near the ramparts in the southern part of the castle.

2. Deliver the Letter: Give Edgar the letter. He'll express his intention to stay and defend the castle.

Choices and Consequences:

1. Leave Irina Alive: Leave Irina at the Bridge of Sacrifice and continue exploring. This leaves the questline incomplete and allows alternative interactions later.

2. Killing Irina: (Warning: unethical path) Killing Irina grants her Shabriri Grape key item, but prevents further quest progression.

3. Hyetta Interaction: If Irina dies before completing Edgar's quest, Hyetta may appear near Irina's location, taking her Shabriri Grape and initiating her own questline.

Completing the Quest:

1. Defeat Leonine Misbegotten: After resting at a Site of Grace in Castle Morne, Edgar's summon sign will appear near the boss fog gate for the Leonine Misbegotten boss fight.

2. Summon Edgar: Summon Edgar for the fight to gain his assistance. Defeating the boss together progresses the quest.

3. Revisit Irina: Head back to Irina at the Bridge of Sacrifice. However, due to various possibilities:

- If Irina is alive, she'll be overjoyed about Edgar's survival and reward you with the Black Knife Tiche Ashes.

- If Irina is dead, you'll only find Edgar at Castle Morne, where he remains grieving and drops the Shabriri Grape but offers no other rewards.

Optional Encounters:

- Hyetta Interaction: If you met Hyetta after Irina's death, she'll be at the Revenger's Shack in western Liurnia. Give her the Shabriri Grape to continue her questline.

- Edgar as Invader: In the late game, you might encounter an invader named Edgar the Revenger near the Revenger's Shack. Defeating him completes the questline, revealing his connection to Hyetta.

Possible Endings:

- Irina Alive: Completing the quest with Irina alive rewards the Black Knife Tiche Ashes and leaves her content about her father's safety.

- Irina Dead: You either gain the Shabriri Grape or progress Hyetta's questline, but Edgar remains grief-stricken at her demise.