Sailor Piece Tier List
Moon Update

Upper Seals → Moon Slayer

Upper Seals only drop from mobs — not bosses. The beefier the enemy, the higher the odds. Grind them, summon the Moon Slayer on Boss Island, and repeat until you can craft his sword.

Moon Slayer summon
Upper Seal
1
Cash
700,000
Gems
700

Farm-spot map

Islands ranked by Upper Seal drop rate.

  • S

    Lawless Island

    Highest

    Elite lawless mobs

    Best AOE density, toughest fights.

  • A

    Ninja Island

    High

    Ninja squads

    Slightly easier than Lawless, very similar drop rate.

  • A

    Judgement Island

    High

    Late-game mobs

    Good if you're already here for Frost Relics.

  • B

    Hollow Island

    Modest

    Hollow-tier mobs

    Pick this only if you're under-geared for Lawless.

Reward ladder

What progress looks like, from first Seal to Moon Slayer sword.

  1. First Upper Seal drops
    5–15 minutes of AOE on Lawless / Ninja Island.
  2. First Moon Slayer summon
    1 Seal + 700K / 700 gems on Boss Island.
  3. Moon Crest stack complete
    Takes 5–10 Moon Slayer kills on average.
  4. Moon Slayer sword unlocked
    Trade at the Moon Slayer NPC at the back of Boss Island.

Moon Slayer drop pool

Each kill rolls from this pool — the more kills, the closer to the full crafting bill.

Material
S

Moon Crests

Core crafting currency for the sword

Material
A

Crescent Shards

Secondary crafting component

Material
A

Lunar Essence

Rare crafting component

Material
S

Demon Remnant

Late-game gate — small drop

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