- Corrupted Excalibur requires a Corrupt Tyrant title plus multiple low-drop boss materials from the Corrupted Knight in Sailor Piece.
- Fast farming comes from repeating lower difficulty runs instead of chasing higher drop rates.
- The Corrupted Excalibur F move needs Alter clan, Corrupted Excalibur, and extra Corruption Cores.
Whether you are running a fruit build or a sword build, having the strongest melee specs in Sailor Piece is always tempting. And when it comes to the late-game combat styles, Corrupted Excalibur (Saber Alter) is one of the ultimate options in Sailor Piece. Just like the high level of damage this style deals, the grind gets even higher. In this guide, learn how to farm the Corrupted Excalibur in Sailor Piece easily, along with the steps to unlock the Saber-Alter F move.
How to Obtain Corrupted Excalibur in Sailor Piece
To acquire the Corrupted Excalibur fighting style in Sailor Piece, you must get the ‘Corrupt Tyrant’ title and Corrupted Knight boss materials in the Boss Island. Once you have the title and materials, go to Boss Island, climb the hand monument on the right, and interact with the Corrupted Knight NPC. This will let you purchase the Corrupted Excalibur melee by giving the following items in Sailor Piece:
- Corrupt Tyrant Title (1%)
- 25x Dark Grail (from any mob or mini boss)
- 15x Morgan Remnant (15%)
- 8x Alter Essence (5%)
- 3x Corruption Core (1.3%)
- 1x Corrupt Crown (0.5%)

Grinding a Sailor Piece title from a summon boss is a difficult task if you are new to the game. I suggest you level up in the game and redeem the Sailor Piece codes first. This will give you enough resources to roll the best Sailor Piece clans and races, helping you improve your stats like damage, crit chance, or lifesteal. And if you don’t wish to grind the Saber Alter for free, you can purchase the Corrupted Excalibur from the Sailor Piece shop.

How to Summon Corrupted Knight in Sailor Piece
To farm the materials, you must summon the Corrupted Knight boss in Sailor Piece. The boss is only spawnable on the Boss Island. Once there, go to the Boss Spawner NPC and interact to open the Sailor Piece bosses list. Scroll down and click the spawn button beside the Corrupted Knight option.

To summon the boss, you will need Dark Grails, Money, and Gems. Here is a list of requirements and boss HP for every difficulty of Corrupted Knight.
| Difficulty Level | HP | Requirements |
|---|---|---|
| Normal | 750,000,000 | 1 Dark Grail 650,000 Money 650 Gems |
| Medium | 2,500,000,000 | 2 Dark Grail 800,000 Money 800 Gems |
| Hard | 6,000,000,000 | 3 Dark Grail 1,000,000 Money 1000 Gems |
| Extreme | 15,000,000,000 | 4 Dark Grail 1,500,000 Money 1,500 Gems |
How to Beat Sailor Piece Corrupted Knight Quickly
Now that you know how to spawn the Corrupted Knight in Sailor Piece, here are some tips and tricks to defeat the Saber Alter boss faster:
- If you want to improve the material drop chances, equip luck titles or get better Sailor Piece traits.
- While it is tempting to increase the chances of drops by pushing the difficulty up, it is not a huge difference. Instead, we suggest you slay the smaller HP boss quickly and keep doing it to get the materials fast.
- Farming the bosses while being AFK is difficult due to the knockbacks. Don’t worry, we have got you a trick to do it. Auto use the F auto ability of Sukuna V2 and jump on top of the finger beside the Corrupt Knight NPC. Check the image below to know where you need to stand.

How to Unlock Sailor Piece Corrupted Excalibur F Move
After you have unlocked the Corrupted Excalibur, you can obtain the F move from the mini Saber Alter NPC on the Boss Island. To craft the F move, here are the required items you will need to complete the purchase:
- Corrupted Excalibur
- Alter clan
- 9x Corruption Core

Sailor Piece Corrupted Excalibur Moveset
If you have yet to unlock Strongest Shinobi, Corrupted Excalibur in Sailor Piece can be a great late-game combat alternative. While it comes with many flashy moves and great damage, its main catch is the knockbacks on every attack. With that said, here is the full moveset of Corrupted Excalibur in Sailor Piece:
| Keybind | Description | Damage (max) |
|---|---|---|
| V | Emit an aura and perform a blade dance for AOE damage | 250 million |
| X | Slash the blade two times, then throw a forward beam | 90 million |
| Z | Throw a flashing beam in the direction of looking | 60 million |
| C | Charge a massive ray and throw it forward as an energy charge | 450 million |
| F | Deal constant damage, then throw a massive beam that deals even more damage | 1 billion |
Note: We tested it on a melee build. That means races, traits, and clans were all melee increasing. We also had runes, haki, aura, and cosmetics equipped.
That is how you can obtain the Corrupted Excalibur in Sailor Piece and acquire the F move for Saber Alter. Which swords in Sailor Piece are you equipping with it? Let us know in the comments.
No, the drop boost is small, so running lower HP versions quickly is usually more efficient.
No, the Alter clan is required along with Corruption Cores and the base Corrupted Excalibur.
While the Corrupt Crown and Corruption Core are key components, the Corrupt Tyrant title is the most difficult to farm.