The Ghoul Update in Sailor Piece introduced Black Reaper, one of the strongest and most grind-heavy melee styles currently available in the game. With flashy abilities, powerful combo potential, and strong farming damage, it has quickly become one of the most sought-after unlocks from Isolation Island.
However, obtaining Black Reaper is not simple. Players must first unlock the new island, farm special materials, repeatedly defeat a boss, and gather several rare drops before they can finally purchase the melee style.
Here is the full process for unlocking Black Reaper in Sailor Piece.
Sailor Piece Black Reaper Guide – How to Unlock, Quest
Black Reaper is tied directly to the new Ghoul progression system introduced in the latest update.
To unlock it, players need to:
- Complete the Blood Flower Quest
- Unlock Isolation Island
- Farm Reaper Keys
- Summon and defeat the Black Reaper boss
- Collect all required crafting materials
- Purchase the melee style
The grind can take a while, especially if you are farming solo.
Blood Flower Quest
Before anything else, players must complete the Blood Flower Quest.
This quest unlocks access to Isolation Island, which is the only place where the Black Reaper boss and required materials can be farmed.
Quest Requirement
You must collect:
- 6 Blood Flowers hidden around C2
Once all flowers are collected, Isolation Island becomes accessible.
Isolation Island
After completing the Blood Flower Quest, travel to Isolation Island to begin the actual Black Reaper grind.
This island contains:
- Reaper enemies
- Boss arena
- Material drops
- Ghoul-related progression content
- Black Reaper NPCs
Most of your farming time will happen here.
Reaper Keys
Reaper Keys are required to summon the Black Reaper boss.
How to Get Reaper Keys
Keys drop from enemies located around:
- Wooden bridges
- Walkways
- Arena sections on Isolation Island
You will need to repeatedly farm these enemies because keys are consumed whenever the boss is summoned.
Boss Difficulty
There are currently multiple summon tiers for the Black Reaper boss.
Normal Version
- Costs 1 Reaper Key
- Easier to defeat
- Better for weaker builds or solo farming
Extreme Version
- Costs 4 Reaper Keys
- Much stronger boss
- Better overall farming efficiency
- Higher difficulty
If your build is strong enough, the Extreme version is generally more rewarding over time.
Black Reaper Materials
After farming the boss, players must collect several specific materials before purchasing the melee style.
Required Materials
You need:
- One-Eyed King Title
- 65,000 Gems
- 20 Black Shards
- 12 Reaper Remnants
- 5 Rinkaku Cores
- 2 Ghoul Essences
Without every material listed above, the purchase option will remain locked.
One-Eyed King Title
The One-Eyed King Title is one of the major progression requirements tied to the Black Reaper unlock.
Players typically obtain it through the new Ghoul progression activities and boss farming associated with Isolation Island.
Black Shards
Black Shards are one of the main farming materials needed for the melee purchase.
You will likely accumulate these naturally while repeatedly grinding the boss and nearby enemies.
Reaper Remnants
Reaper Remnants are another key crafting material tied directly to the Black Reaper grind.
Expect to farm the boss multiple times before collecting enough.
Rinkaku Cores
Rinkaku Cores are rarer materials required in smaller quantities.
These are generally tied to the Ghoul enemy progression system on Isolation Island.
Ghoul Essences
Ghoul Essences are among the rarer requirements needed for the final purchase.
Because only two are required, they are likely intended to be uncommon drops compared to the other farming materials.
Black Reaper Purchase
Once all requirements are complete, you can finally buy Black Reaper and begin using its abilities in combat.
The melee includes:
- Strong M1 attacks
- Multiple damaging abilities
- Large AoE attacks
- Long-duration skills
- Additional F move progression
The F ability may require another separate questline after obtaining the melee itself.
Black Reaper is currently one of the most expensive and time-consuming unlocks in Sailor Piece, but it also looks like one of the strongest melee styles introduced so far. Between the Blood Flower Quest, Isolation Island progression, Reaper Key farming, and rare material requirements, the grind is definitely aimed at late-game players.
Still, for players willing to invest the time, Black Reaper appears to be one of the biggest rewards from the entire Ghoul Update.