Sailor Piece Masteries Guide: All F Move Unlocks, Buffs, and Requirements

Sailor Piece Masteries Guide Masteries in Sailor Piece are a late-game upgrade system tied to specific swords and melee classes. In most cases, a mastery unlocks the weapon or class F Move and also grants a permanent damage increase, making it an important step if you want to fully maximize your build. Most masteries are completed through questlines, but some are handled as item turn-ins to a mastery NPC instead. That split is important, because some upgrades are pure grind quests while others depend more on rare materials, traits, clans, or races. The newest addition is Ice Queen Mastery , which follows the item hand-in format instead of a questline. It is located at Boss Island and continues the recent Ice update progression built around the Ice Queen sword, Frostbane Clan, and the new LuckBorn race. How Masteries Work in Sailor Piece To start a mastery, you usually need the matching sword, melee class, or upgraded form already unlocked. After that, you either complete a list of objectives or hand in specific items to the related NPC. When finished, the mastery reward is typically one of two outcomes: F Move unlock for the weapon or class Permanent damage buff , usually +30% Ragna is the main exception in this list because its mastery focuses on a larger raw damage increase instead of giving an F Move. Current Masteries and Buffs Shadow – Gain F Move and +30% DMG Aizen – Gain +30% DMG Ragna – Gain +35% DMG Strongest Of Today – Gain F Move and +30% DMG Rimuru – Gain F Move and +30% DMG Strongest In History – Gain F Move and +30% DMG Shadow Monarch – Gain F Move and +30% DMG True Aizen – Gain F Move and +30% DMG Blessed Maiden – Gain F Move and +30% DMG Gilgamesh – Gain F Move and +30% DMG Saber Alter – Gain F Move and +30% DMG Atomic (Cid) – Gain F Move and +30% DMG Strongest Shinobi (Madara) – Gain F Move and +30% DMG Moon Slayer – Gain F Move and +30% DMG Ice Queen – Gain F Move and +30% DMG All Sailor Piece Mastery Requirements Ragna Sword Mastery Requirement: Ragna Ragna Mastery Quest: Kill 750 NPCs Deal 400M Damage Kill 15 Players Take 85M Damage Kill 100 Bosses Reward: +35% DMG Aizen Sword Mastery Requirement: Aizen Sword Aizen Mastery Quest: Deal 750M Damage Kill 15 Players Kill 1000 Hollows Defeat 75 Bosses Defeat 20 Aizen Bosses Reward: +30% DMG Shadow Sword Mastery Requirement: Shadow Sword Shadow Mastery Quest: Deal 1B Damage Kill 1250 NPCs Defeat 150 Bosses Clear 10 Easy Shadow Dungeons Clear 10 Medium Shadow Dungeons Clear 10 Hard Shadow Dungeons Rewards: Gain F Move, +30% DMG Strongest In History Mastery You first need the Domain Shard . This mastery does not use a questline. Instead, you give the required items to an NPC. Requirements: Strongest In History (Sukuna V2) Malevolent Trait 3x Malevolent Souls 1x Shrine Domain Shard Rewards: Gain F Move, +30% DMG Strongest Of Today Mastery You first need the Domain Shard . This mastery also works through an item hand-in instead of a questline. Requirements: Strongest Of Today (Gojo V2) Infinity Trait 3x Blue Singularity 1x Infinity Domain Shard Rewards: Gain F Move, +30% DMG Rimuru Sword Mastery Requirement: Rimuru Rimuru Mastery Quest: Defeat Rimuru Boss on Hard or Extreme 15 times Obtain Slime Race (0.05%) Kill 10,000 NPCs Rewards: Gain F Move, +30% DMG Gilgamesh Mastery Requirement: Gilgamesh Mastery Requirement: Craft the Babylon Key at Boss Island Rewards: Gain F Move, +30% DMG Shadow Monarch Mastery Requirement: Sung Jinwoo V2 Shadow Monarch Mastery: Win 10 Double Dungeon runs on Hard or Extreme difficulty 10 Obtain Monarch Clan Defeat 25 Shadow Soldiers Shadow Soldiers have an extremely low spawn chance, but the odds increase with each wave and on higher difficulties. Rewards: Gain F Move, +30% DMG True Aizen Sword Mastery Requirement: True Aizen True Aizen Mastery Quest: Defeat True Aizen Boss on Hard or Extreme 15 times Obtain Espada Clan Consume 5 Transmutation Shards Transmutation Shards drop from Quincy mobs in Soul Society or Hollow mobs in Hueco Mundo. Rewards: Gain F Move, +30% DMG Blessed Maiden Mastery This mastery does not use a questline. You must hand in the required materials to the NPC. Requirements: Galevorn Race 2 Celestial Marks 8 Aero Cores 75 Tempest Relics Rewards: Gain F Move, +30% DMG Saber Alter Mastery This mastery also works through item turn-in rather than quests. Location: Boss Island Requirements: Alter Clan 2 Corrupt Crown 9 Corruption Core 85 Dark Grails Rewards: Gain F Move, +30% DMG Atomic (Cid) Mastery Requirement: Atomic (Cid) Atomic (Cid) Mastery Quest: Defeat Atomic Boss on Hard or Extreme 20 times Get Eminence Clan Reach Floor 50+ in Infinite Tower 5 times Rewards: Gain F Move, +30% DMG Strongest Shinobi (Madara) Mastery This mastery works through item requirements rather than a standard questline. Requirements: Strongest Shinobi (Madara) Warlord Race 2 Path Fragment 5 Eternal Core 10 Battle Sigil Rewards: Gain F Move, +30% DMG Moon Slayer Mastery Requirement: Moon Slayer Moon Slayer Mastery Requirements: Upper Clan Moon Slayer 2x Moon Crest 10x Crescent Shard 85x Upper Seal Rewards: Gain F Move, +30% DMG Ice Queen Mastery Location: Boss Island Ice Queen Mastery does not use a questline. Instead, you hand the required materials to the mastery NPC. Requirements: Frostbane Clan Ice Queen Sword 2x Ice Core 10x Frozen Brand 85x Frost Relic Rewards: Gain F Move, +30% DMG Best Way to Approach Masteries If your goal is efficient progression, it helps to separate masteries into four groups: Quest-heavy masteries like Shadow, Aizen, Ragna, Rimuru, Atomic (Cid), Shadow Monarch, and True Aizen Material hand-in masteries like Strongest In History, Strongest Of Today, Blessed Maiden, Strongest Shinobi (Madara), Moon Slayer, and Ice Queen Special-case unlocks like Gilgamesh, which depends on crafting the Babylon Key Hybrid endgame checks that also require rare clans, races, or tower progression For most players, the biggest wall is not the NPC itself but the rare race, clan, trait, or material requirement. Because of that, it is usually smarter to prepare all related drops first and only then commit to the mastery grind. Ice Queen is a good example of that. Even though the mastery itself is simple, the real grind is collecting enough Frost Relics, getting Frostbane Clan, and finishing the sword path first. Final Thoughts Masteries are one of the most important endgame systems in Sailor Piece because they add the last missing skill slot and push your weapon or class into its stronger form. Whether you are working on a sword like Shadow, True Aizen, or Ice Queen, or a melee class like Strongest In History, Atomic (Cid), or Blessed Maiden, finishing mastery is what turns a good build into a fully upgraded one. If you only care about raw value, prioritize masteries that unlock both an F Move and a +30% damage buff . Ragna still stands out as a useful damage-only option thanks to its +35% reward, but the masteries with a new F skill usually provide the bigger overall upgrade.