Sailor Piece Infinity Domain Mastery Guide, How to Unlock the Strongest of Today Ultimate!
Unlocking the full power of a fighting style is one of the most important goals for late–game players in Sailor Piece. If you are using the Strongest of Today fighting style, completing the Infinity Domain Mastery quest is something you should not skip. This quest gives access to a powerful ultimate move and also increases your overall damage output. Also check out our Sailor Piece Codes for more rewards!
However, finishing the Infinity Domain Mastery quest is not simple. You will need to defeat bosses, collect several rare items, and craft a special shard before you can unlock the final ability. Because many of the materials have low drop rates, players often spend a lot of time farming them. This guide explains everything you need to do to complete the Infinity Domain Mastery quest in Sailor Piece.
How to Unlock the Strongest of Today Fighting Style
Before starting the Infinity Domain Mastery quest, you must first obtain the Strongest of Today fighting style. This fighting style is learned on Shinjuku Island. Go to the island and talk to the Strongest of Today NPC. To unlock the style, you must submit several items that drop from the Strongest of Today Boss.
- Infinity Essence 0.65% – 0.9% drop chance from Strongest of Today Boss
- 3 Blue Singularity 2% – 3% drop chance from Strongest of Today Boss
- 9 Reversal Pulse 15% – 25% drop chance from Strongest of Today Boss
- 6 Six Eye 6% – 8% drop chance from Strongest of Today Boss
- Strongest Sorcerer Title 1% – 1.5% drop chance (Pity at 125)
To fight this boss, interact with the Strongest Boss Summoner NPC on Shinjuku Island and use 1 Limitless Key to spawn the boss. Because the drop rates are fairly low, expect to fight the boss multiple times before getting everything you need.
How to Complete the Infinity Domain Mastery Quest
After unlocking the fighting style, the next step is completing the Infinity Domain Mastery quest. Head to the Infinity Domain Mastery NPC, which is located inside the crooked building on Shinjuku Island, near the island’s Quest NPC. You must submit the following items to finish the quest.
- Infinity Trait Mythical rarity (0.25% chance from Trait Reroll)
- 3 Blue Singularity Dropped by the Strongest of Today Boss
- 1 Infinity Domain Shard Crafted using special materials
How to Craft the Infinity Domain Shard
The Infinity Domain Shard must be crafted before you can finish the quest.
Follow these steps:
1. Farm Energy Shards
You need 6 Energy Shards. These can be obtained by defeating Strong Sorcerer enemies on Shinjuku Island.
2. Get Cursed Flesh
You also need 2 Cursed Flesh. This item drops from the Strongest in History Boss, which can also be summoned using a Limitless Key from the Strongest Boss Summoner NPC.
The drop rate for Cursed Flesh is around 0.65% – 0.9%, so it may take several attempts.
3. Craft the Shard
Once you have the materials:
- Find the Infinity Domain Shard NPC
- This NPC is located near a rock behind the crooked building where the Mastery NPC stands
- Submit 6 Energy Shards and 2 Cursed Flesh
After that, you will receive 1 Infinity Domain Shard.
Infinity Domain Mastery Rewards
Once you give all required materials to the Infinity Domain Mastery NPC, the quest will be completed.
You will receive two important rewards:
- Unlock the “F” move for the Strongest of Today fighting style
- Gain a permanent 30% damage boost
The new move is one of the strongest abilities in Sailor Piece and deals extremely high damage, making it very useful for bosses, raids, and tower content.
The Infinity Domain Mastery quest in Sailor Piece takes time, but the rewards are worth the effort. Unlocking the final move for the Strongest of Today fighting style gives you a huge advantage in combat and improves your damage significantly. If you plan to complete this quest, focus on farming the Strongest bosses consistently and collecting the crafting materials on Shinjuku Island. With patience and enough runs, you will eventually unlock the Infinity Domain Mastery and gain one of the strongest abilities currently available in the game.