- Players can defeat the Cursed King boss at the Shibuya Station to get the Malevolent Keys in Sailor Piece.
- Another way is to defeat the Curse enemies on the Shinjuku island to get these keys.
- The Malevolent Keys can summon the Strongest in History boss at the Shinjuku Island.
Some of the rare items in Sailor Piece are a core part of the progression, and the Malevolent Key is one of those that instantly becomes a priority. This item is important when you’re trying to reach the end-game stages of the game and looking for quality upgrades for your build. Check this guide to learn all about how to get Malevolent Key in Sailor Piece.
How to Obtain Malevolent Key in Sailor Piece
There are two main ways of obtaining a Malevolent Key in Sailor Piece. The first one involves a beginner-level boss fight, while the other requires defeating some mid-level NPCs. So, let’s discuss the two methods for how to get a Malevolent Key in detail:
Defeat Cursed King Boss
The first and most reliable method is to defeat the Cursed King (Sukuna) boss located at the Shibuya Station on the Sailor Piece Map. This is a world boss, so it spawns at a regular interval of 5 minutes and cannot be sped up manually.

However, defeating the Cursed King boss grants a 100% chance to receive the Malevolent Key as one of its drop rewards. Moreover, it is an easy-level boss, so you can beat him easily with the Gryphon or any other equivalent-tier Sailor Piece swords.
Defeat Curse NPCs at Shinjuku Island
The second method is a less intense approach and can help you AFK-farm the Malevolent keys. All you need to do is head over to the Shinjuku Island and defeat the Curse enemies located to the left of the portal. These enemies also drop the Malevolent Keys, although at a slightly lower rate than the Cursed King.

Now, the advantage here is time management. You were required to wait for the Cursed King boss spawn or take the effort of switching servers. But here, you can simply equip the best AoE damage-dealing sword or melee fighting style in Sailor Piece and finish off the enemies at once.
Tips and Tricks to Farm Sailor Piece Malevolent Key Quickly
You now know about the two best methods to get the Malevolent Keys in the game, but it takes time to get a lot at once. So, here are some tips and tricks to optimize your approach and help you farm the Sailor Piece Malevolent Key quickly:
- One of the most important tasks is to create the best Sailor Piece damage build first. This will help you take down both the boss and the enemies fast.
- Since the Cursed King world boss spawns every 5 minutes after being defeated, you can switch servers to get the Keys fast without waiting.
- Now, if you’re looking to AFK farm the Curse enemies, consider improving the Luck stat using the best Sailor Piece titles, clans, Spec Passives, and races.
- Other best ways to improve the luck and increase the drop rates for the Malevolent Key is building up the Ascension levels, unlocking the Skill Tree nodes, and equipping luck-based runes.
How to Use Malevolent Key in Sailor Piece
Once you have gathered a few Malevolent Keys, the next step is understanding what these are used for. Head over to the Shinjuku Island, and dash straight from the portal area to find the Strongest Boss Summoner Sailor Piece NPC.
Interact with this guy by pressing and holding the ‘E‘ key, and it will open up a new window displaying two Sailor Piece bosses – The Strongest of Today and The Strongest in History. You will see that summoning the Strongest in History boss requires the Malevolent Keys.

Now, you can submit the required amount of Keys to spawn the Strongest in History boss, depending on the difficulty. The normal level requires 1 Malevolent Key, and it increases by 1 for each level rise.
You would most likely be curious about why fighting this boss is necessary. But, as you progress, you’ll learn that defeating the Strongest in History grants a chance to get the Cursed Flesh, one of the many items in Sailor Piece required for Ascension to level 7. Moreover, the materials from this boss help in unlocking Sukuna V2 in Sailor Piece.
So, that ends the guide for how to get Malevolent Key in Sailor Piece, stating all its uses as well. Have you got this item and completed your Ascension yet? Tell us in the comments below.
The fastest way to get the Malevolent Keys in Sailor Piece is to head to Shinjuku Island and use a decent AoE damage-dealing build to finish off the Curse enemies repeatedly.
Malevolent Keys are mainly used to summon the Strongest in History boss of Sailor Piece.
