Sailor Piece, the popular Roblox anime-inspired fighting game, features powerful weapons like the Shadow Monarch Sword—a high-tier melee inspired by Sung Jin-Woo from Solo Leveling. Unlocking its F Move (the ultimate skill) grants massive burst damage, shadow summons, and a permanent 30% damage buff once completed.
This comprehensive guide walks you through every step: obtaining the Shadow Monarch Sword first, locating the NPC, completing the three mastery quests, and optimization tips to farm efficiently.
Step 1: Unlock the Shadow Monarch Sword (Prerequisite)
You must own the Shadow Monarch Sword before you can access its F Move quests.
Requirements to Get the Sword:
- First, obtain the base Jinwoo Sword from the Jinwoo Trainer NPC on Sailor Island (right corner area).
- Collect these rare materials by farming the Double Dungeon on Dungeon Island (the Shadow Monarch boss spawns on Waves 5, 10, and 15):
- 10 × Monarch Core (6.75–12% drop chance)
- 5 × Monarch Essence (2.75–6.5% drop chance)
- 2 × Kamish Dagger (0.75–1.4% drop chance)
- 1 × Shadow Crystal (0.5–1% drop chance)
- King of Shadows Title (0.8% drop chance from Shadow Monarch boss)
How to Access Double Dungeon:
- Minimum level: Around 5000+ recommended for comfortable clears.
- Use 1 Dungeon Ticket per run.
- The dungeon has 15 waves, with the Shadow Monarch boss appearing multiple times per run.
Once you have everything, head to Dungeon Island and speak to the Shadow Monarch NPC (or Shadow Trainer). Trade the materials, the Jinwoo Sword, and currency (often 10M money and gems) to upgrade into the full Shadow Monarch Sword.
Pro Tip: Farm Double Dungeon on Hard or Extreme for better drop rates and faster material accumulation. Group up with friends or strong clan members to speed up clears.
Step 2: Locate the Shadow Monarch Mastery NPC
After equipping the Shadow Monarch Sword:
- Travel to Starter Island.
- Find the Shadow Monarch Mastery NPC (also called Shadow Master or Shadow Monarch Trainer in some guides). He stands in a prominent area near other mastery NPCs.
Talk to him—he will offer the three mastery quests required to unlock the F move.
Step 3: Complete the Three Shadow Monarch F Move Quest s
The NPC assigns these exact quests (confirmed across multiple sources):
- Win 10 Double Dungeons on Hard or Extreme mode
- Focus on clearing the full 15-wave Double Dungeon.
- Hard/extreme difficulties count toward progress.
- Tip: Use strong fruits, traits, and accessories for faster clears. Shadow Monarch already excels here with its AoE and summons.
- Obtain and Equip the Monarch Clan
- Use Clan Rerolls (purchased or obtained via events/boss drops) until you get the Monarch Clan.
- Equip it in your clan slot.
- This is RNG-heavy, so stock up on rerolls or trade with players.
- Defeat 25 Shadow Soldiers in the Double Dungeon
- Shadow Soldiers spawn as enemies/minions during the dungeon waves (especially around Shadow Monarch boss fights).
- Kill a total of 25 across multiple runs.
- Tip: They may not spawn every wave—focus on full clears and target them specifically when they appear. Some players report low spawn rates, so patience or multiple runs are key.
Once all three quests are completed, return to the Shadow Monarch Mastery NPC. He will confirm the unlock, grant the F Move (powerful shadow-based ultimate ability), and apply the permanent 30% damage buff to the sword.
What Does the Shadow Monarch F Move Do?
- Massive AoE shadow explosion/damage
- Summons additional shadow soldiers for sustained DPS
- High burst potential in PvP and boss fights
- Combines excellently with Shadow Monarch’s existing V skill for devastating combos
Many players rank Shadow Monarch in the S-tier for swords thanks to the F Move’s utility and damage.
Pro Tips for Fast Unlocking
- Efficient Farming Route: Run Double Dungeon repeatedly on Extreme. One good run can progress multiple quests at once (dungeon wins + Shadow Soldier kills + material drops).
- Party Up: Join public servers or Discord communities for co-op dungeon runs to reduce clear time.
- Gear Optimization: Equip high-damage fruits, Haki, and accessories that boost melee or shadow damage.
- Reroll Strategy: Save Clan Rerolls from events or boss farming to minimize RNG frustration for the Monarch Clan.
- Level Grinding: If underleveled, farm easier NPCs or lower dungeons first to hit the recommended stats for Hard/Extreme.
- Backup Progress: Quests track across sessions, but double-check with the NPC after each major milestone.
Common Mistakes to Avoid
- Trying to unlock the F Move without owning the Shadow Monarch Sword.
- Running Normal/Easy dungeons (they don’t count for the 10-win quest).
- Forgetting to equip the Monarch Clan after obtaining it.
- Ignoring Shadow Soldiers—they are specific enemies, not regular mobs.
Mastering the Shadow Monarch Sword with its F move turns you into a shadow army commander, dominating both PvE bosses and PvP arenas in Sailor Piece.
Have you unlocked the Shadow Monarch F move yet? What was your biggest farming struggle—the clan rerolls or the soldier kills? Share your tips in the comments below!
