Fastest way to get Reaper Keys in Sailor Piece

Sharing this for anyone working through the Ghoul Update content. Decent walkthrough from the creator covering the full Black Reaper unlock chain.

Quick rundown of what’s covered:

• Completing the Blood Flower quest (all 6 flower locations) to unlock Isolation Island in Sea 2
• Farming Reaper Keys from Ghoul Member NPCs — drop rate is rough, so a luck build helps
• Summoning and farming the Black Reaper boss for materials (Black Shards, Reaper Remnants, etc.)
• Mastery grind: ghoul bloodline + leveling to 250

Heads up — save up around 50 keys before starting the mastery quest, you’ll need them. Drop your own tips below.