How to Unlock Saber Alter in Sailor Piece: The Definitive Guide

Getting the powerful Saber Alter in Sailor Piece takes patience and a good dose of luck this March 2026. This sword stands out as one of the most coveted weapons in the game, but the road to unlocking it involves intense grinding or the strategic use of Robux. If you are looking to strengthen your arsenal, we have prepared the exact walkthrough to find the NPC and collect all the materials needed on Boss Island.

There are two main paths to get the item. The fastest, but expensive, is to buy the bundle in the main shop for 1,299 Robux, which includes the Saber Alter and the Alter Armor. However, most players prefer the free route through gameplay. To do that, you must travel to Boss Island and climb the large rocky structure at the center of the arena. There, the Saber Alter NPC sells the weapon, as long as you present an extensive list of requirements.

Requirements to obtain the Saber Alter

• Title: The Corrupt Tyrant
• 1 Corrupt Crown
• 3 Corruption Cores
• 8 Alter Essences
• 15 Morgan Remnants
• 25 Dark Grails
• 35,000 Gems

While Gems accumulate naturally, the other items require you to face the Saber Alter boss repeatedly. To summon this enemy, talk to the Boss Summoner NPC on the same island. Prepare your resources, as each summon is expensive and drop chances increase on higher difficulties. Also, remember that you will need to defeat the boss several times to collect the necessary essences and fragments.

Boss Summon Costs

• 1 Dark Grail
• 650,000 Money
• 650 Gems

The hardest item to farm is usually the Dark Grail, which has a low drop chance when defeating any NPC on the map. So the best strategy is to focus on intensive farming areas and maximize your Luck stat. You can increase your chances by changing your race, equipping Runes, joining specific Clans, or using titles from other bosses. Once you have gathered everything, just return to the top of Boss Island and claim your new sword.