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Tower Key

How to get Tower Key in Sailor Piece, the current Tower Key drop chances, and which routes are best for opening Infinite Tower runs consistently.

Materials Verified
Main use Enter Infinite Tower
Best published enemy Ghoul Members at 0.2%
Classic routes Ninja Island and Lawless Arena Fighters
System page Infinite Tower
Overview

Tower Key

  • Tower Key item icon in Sailor PieceTower Key is the entry item used each time you open the Infinite Tower portal.
Obtainment

Obtainment

  • Farm late normal enemies if you want the strongest currently published Tower Key item icon in Sailor PieceTower Key percentages.
  • Use Ghoul Members if you only care about the best current rate on the normal-enemy sheet.
  • Use Ninja Island or Lawless Arena Fighters if you want the older dedicated Tower Key item icon in Sailor PieceTower Key routes that still overlap well with other endgame farming.
Section

Current Tower Key routes

SourceIsland or routePublished rateNotes
Ninja [Lv.11500]Ninja Island0.1244%One of the classic Tower Key routes tied directly to Tower Island prep
Arena Fighter [Lv.12000]Lawless route0.1294%Older Lawless fallback and one of the easiest AoE Tower Key farms
Delinquent [Lv.12750]Starter Island Sea 20.148375%Better than the older Arena Fighter line while also overlapping Sea 2 materials
Strong Fighter [Lv.13000]Starter Island Sea 20.148375%Same rate band as Delinquent with different relic overlap
Strong Bandit [Lv.13500]Bizarre Island0.148375%Best Bizarre Island overlap because Dominion Brand and relic parts also drop here
Fast Ninja [Lv.14500]Punch Island0.158375%Older Punch Island benchmark below the newer Blue Planet, Slayer Island, and Isolation Island rows
Spirit Fighter [Quest 24]Blue Planet0.175%Blue Planet route with Spirit Key and Spirit Stone overlap
Strong Slayer [Quest 25]Slayer Island0.185%Second-best captured normal-enemy Tower Key line
Ghoul Members [Lv.18500]Isolation Island0.2%Best currently published Tower Key drop chance on the normal-enemy sheet
Section

What Tower Key is used for

  • Tower Key item icon in Sailor PieceTower Key is spent to open the Infinite Tower portal.
  • Each Infinite Tower run consumes 1 Tower Key item icon in Sailor PieceTower Key .
  • Once you can farm keys consistently, the main value of the route shifts toward Tower Token item icon in Sailor PieceTower Tokens , secret rune chasing, and permanent tower upgrades.
Related Pages
Infinite Tower Tower Island endgame mode with scaling floors, stacking debuffs, direct floor rewards, Tower Tokens, and a backup shop. Normal Enemy Drop Charts Published normal-enemy drop tables for rerolls, chests, keys, and newer Sea 2 route materials, including Guild Key drop chance, Dominion Brand drop chance, and Relic Part drop chances, organized into readable charts instead of one giant screenshot dump.
Tower Key FAQ
How do you get Tower Key in Sailor Piece?
Tower Key currently comes from normal-enemy farming, with the strongest published routes now sitting on the late normal-enemy sheet and the classic dedicated farms still being Ninja Island enemies and Lawless Arena Fighters.
What is the Tower Key drop chance in Sailor Piece?
The best current published Tower Key line on the normal-enemy sheet is Ghoul Members at 0.2%, with Strong Slayer at 0.185%, Spirit Fighter at 0.175%, and Fast Ninja at 0.158375%.
What is Tower Key used for in Sailor Piece?
Tower Key is used to open the Infinite Tower portal, and each run consumes 1 key.