- What to know
- Quick overview of Shadow Monarch F Move
- Location of Shadow Monster NPC for F Move
- Requirement 1 – Shadow Monarch Sword
- Requirement 2 – completing 10 double dungeons
- Requirement 3 – obtaining the Monarch clan
- Requirement 4 – defeating 25 Shadow soldiers
- Rewards after unlocking the Shadow Monarch F move
- Why does this upgrade change your gameplay significantly
- Challenges you may face during the process
What to know
- You must own the Shadow Monarch Sword before starting the unlock process
- Progress mainly comes from Double Dungeon grinding
- Monarch Clan is RNG-based and can slow progress
- Unlocking grants a permanent 30% damage boost
If you are pushing toward stronger builds in Sailor Piece, the Shadow Monarch F Move is one of the most important upgrades you can unlock. It significantly increases your damage output and enhances your overall combat efficiency, making it essential for late-game progression.
Quick overview of Shadow Monarch F Move
| Category | Details |
|---|---|
| Required Weapon | Shadow Monarch Sword |
| Dungeon Wins | 10 Double Dungeons (Hard/Extreme) |
| Clan Requirement | Monarch Clan |
| Enemy Requirement | 25 Shadow Soldiers |
| Final Reward | F Move + 30% damage boost |
Location of Shadow Monster NPC for F Move
All major progress toward unlocking the Shadow Monarch F Move takes place inside Double Dungeons, which act as the central activity for this quest. These dungeons are where you will complete runs, encounter Shadow Soldiers, and build overall progression.

You will need to focus specifically on Hard or Extreme difficulty modes, as lower difficulties do not count toward the requirements. Because of this, your build strength and survivability directly impact how efficiently you progress.
Over time, you will naturally revisit these locations repeatedly, making them the core farming zone for this unlock.
Requirement 1 – Shadow Monarch Sword
Before anything else, you must already possess the Shadow Monarch Sword, as the F Move is directly tied to this weapon. Without it, none of the progression requirements will count.

This requirement ensures that only players who have already reached a certain level of progression can access the ability, making it part of a more advanced build path.
Requirement 2 – completing 10 double dungeons
One of the primary requirements is successfully clearing 10 Double Dungeons on Hard or Extreme difficulty. This is a straightforward but time-intensive objective that tests both your damage and survivability.

Because of the increased difficulty, your efficiency in clearing these dungeons plays a huge role in how quickly you progress. Faster runs mean faster completion of this requirement and more chances to encounter Shadow Soldiers along the way.
Requirement 3 – obtaining the Monarch clan
The Monarch Clan requirement introduces a strong RNG element into the process, as it can only be obtained through clan rerolls. Unlike dungeon progression, this part depends entirely on luck.

This means that some players may unlock it quickly, while others may take significantly longer, depending on how many rerolls they have available. Preparing enough rerolls beforehand can help reduce delays and keep your progression smooth.
Once obtained, however, this requirement is permanently completed, allowing you to focus entirely on dungeon-related objectives.
Requirement 4 – defeating 25 Shadow soldiers
Defeating 25 Shadow Soldiers is often the most time-consuming part of the entire process, mainly due to their low spawn rate inside Double Dungeons.

These enemies do not appear consistently, which means you may need to run multiple dungeons before encountering enough of them. Some runs may yield several Shadow Soldiers, while others may have none at all.

Despite this, consistent dungeon farming ensures steady progress over time, as the kills gradually accumulate with each run.
Rewards after unlocking the Shadow Monarch F move
| Reward | Impact |
|---|---|
| Shadow Monarch F Move | Unlocks a powerful ability |
| Damage Boost | +30% overall damage |
| Combat Efficiency | Faster farming and boss fights |
Once unlocked, the improvement is immediate and noticeable, especially in high-level content. Your attacks become more effective, and your overall gameplay becomes smoother and more aggressive.
Why does this upgrade change your gameplay significantly
The 30% damage boost transforms how you approach combat in Sailor Piece. You will be able to clear enemies faster, handle tougher encounters, and reduce the time spent grinding for other items.

This upgrade also enhances synergy with your existing abilities, making your entire build feel more complete and optimized. It is especially valuable for players focusing on efficiency and high-level performance.
Challenges you may face during the process
The biggest challenges come from RNG elements and repetition. The Monarch Clan requirement depends on luck, while Shadow Soldiers rely on spawn rates, both of which can slow down progress.
Additionally, the difficulty of Hard and Extreme dungeons can be a barrier if your build is not properly optimized, leading to slower runs or failed attempts.
However, with consistency and preparation, these challenges can be managed effectively, allowing you to steadily work toward unlocking the ability.