How to Get Crimson Heart in Sailor Piece: Drop Rate, Farming Guide and Sukuna V1 Unlock

Crimson Heart is a Mythical rarity item in Sailor Piece. It drops exclusively from the Sukuna boss at Shibuya Station, with a 2.5% drop chance per kill. You only need one, but the low drop rate makes efficient farming essential.

The item’s sole purpose is to unlock the Sukuna Melee Spec, also called Sukuna V1. Outside of that, it holds no functional in-game use, though players occasionally trade it due to its Mythical rarity. This Axeetech guide covers the exact boss location, full drop table, quest requirements, material costs, and the fastest farming strategy.

Also on Axeetech: Updated Sailor Piece Codes | Sailor Piece Clans Tier List | Sailor Piece Races Tier List | Sailor Piece Fruit Tier List

What Is the Crimson Heart in Sailor Piece?

Crimson Heart is a single-use crafting material tied directly to the Sukuna V1 melee fighting style. You submit it to the Sukuna Trainer NPC at Shibuya Station alongside other farmed materials.

The Sukuna spec justifies the grind. It delivers high AoE damage, strong PvP skills, and a dual-function buff ability. Tapping the buff raises Sukuna’s skill and M1 damage by 25% for 10 seconds. Holding it converts the same ability into a 6-second health regeneration effect. That damage-and-sustain combination makes Sukuna V1 one of the strongest melee specs available.

Crimson Heart Stats	Detail
Item Name	Crimson Heart
Rarity	Mythical
Drop Source	Sukuna boss
Drop Location	Shibuya Station
Drop Rate	2.5%
Quantity Needed	1
Use	Unlock Sukuna Melee Spec (V1)
Trade Value	High

Sukuna Boss Location and Spawn Details in Sailor Piece

Sukuna Boss Location

The Sukuna boss spawns at Shibuya Station island on a platform between two buildings. You can spot it from a distance by the word “Sukuna” above its head alongside a skull icon.

The Sukuna Trainer NPC stands at the top of the building directly in front of the portal. An Enchanter NPC and Blessing NPC sit nearby, helping you confirm the correct building. Visit the Trainer first before farming begins.

Sukuna Boss Stats

Stat	Detail
Location	Shibuya Station island
Spawn Type	Automatic, no item required
Spawn Timer	Every 7 minutes and 30 seconds
Total HP	5,000,000
Map Marker	Yes, with countdown timer
Drop Requirement	Deal 10% of total HP (500,000 damage)

Sukuna is one of the more manageable bosses in Sailor Piece. Players with mid-game builds clear it without excessive difficulty. Furthermore, the short respawn timer makes it one of the best farming targets in the latest version of the game.

All Sukuna Boss Drops and Drop Rates in Sailor Piece

You must deal at least 10% of Sukuna’s total HP to qualify for any drops.

Drop	Drop Rate	Notes
Haki Color Reroll	60%	Rerolls your Haki color
Race Reroll	40%	Strong reroll farming source
Trait Reroll	32.5%	Late-game trait farming
Malevolent Key	30%	Summons Strongest in History boss for V2
Boss Ticket	30%	Exchange for weapons and specs
Cursed Finger	20%	Required for Sukuna V1 (need 6x)
Dungeon Key	20%	Opens dungeon content
Dismantle Fang	8%	Required for Sukuna V1 (need 3x)
Sukuna Collar	4%	Rare accessory
Curse King Title	4%	Rare title
Crimson Heart	2.5%	Required for Sukuna V1 (need 1x)

At 2.5%, you need approximately 40 kills before landing one Crimson Heart. With Sukuna respawning every 7 minutes 30 seconds, that equals roughly 5 hours of active farming with no Luck bonus. Using the Kitsune race (+25% Luck Multi) reduces expected kills to around 32, cutting farm time to approximately 4 hours.

Luck Setup	Expected Kills	Estimated Time
No Luck bonus	Approx. 40 kills	Approx. 5 hours
Kitsune race (+25% Luck)	Approx. 32 kills	Approx. 4 hours
Kitsune + Fortune Rune	Fewer than 32	Under 4 hours

Sukuna V1 Requirements: Quest Chain and Full Materials

Step 1: Visit the Sukuna Trainer NPC

Head to Shibuya Station and speak to the Sukuna Trainer NPC at the top of the building in front of the portal. This starts the three-quest chain. You cannot submit materials until all three quests are complete.

Step 2: Complete All Three Quests

1. Deal 35,000,000 cumulative damage. Any source counts. AoE Devil Fruits like Quake or Flame speed this up significantly.
2. Defeat 25 players in PvP. Use public servers or a private server with a friend to complete this faster.
3. Defeat the Sukuna boss 15 times. Plan for 112 to 115 minutes of respawn wait across 15 kills.

The 15 Sukuna kills will naturally produce most of your Cursed Fingers and Dismantle Fangs. However, the Crimson Heart at 2.5% may require additional kills after the quest completes.

Step 3: Submit All Materials

Material	Quantity	Source	Drop Rate
Dismantle Fang	3x	Sukuna boss	8%
Crimson Heart	1x	Sukuna boss	2.5%
Cursed Finger	6x	Sukuna boss	20%
Gems	5,000	NPC farming, chests, codes	Earned currency
Gold	1,250,000	NPC farming, chests, codes	Earned currency

Redeem active Sailor Piece codes before farming. Many codes reward free Gems, reducing the currency grind.

How to Farm Crimson Heart Fast in Sailor Piece

1. Travel to Shibuya Station using the island portal.
2. Locate the Sukuna spawn platform between the two buildings. Watch the map marker and the countdown timer.
3. Equip a strong AoE build. Quake Fruit or Flame Fruit clears Sukuna quickly and meets the 10% damage threshold easily.
4. Defeat Sukuna each respawn. Collect all drops every kill, including Malevolent Keys, Race Rerolls, and Dismantle Fangs.
5. Use the 7-minute 30-second downtime to farm nearby NPCs for Gold and Gems.
6. Repeat until Crimson Heart drops. Expect approximately 40 kills on average.

Use Kitsune race and Fortune Rune together for the highest possible drop rate. Farm on a private server to guarantee you always meet the 10% damage requirement alone. If Sukuna is already dead in your public server, server hop to reset the timer independently.

Hold every Malevolent Key that drops. They have a 30% drop rate and are the only way to summon the Strongest in History boss for Sukuna V2 later.

Final Summary: How to Get Crimson Heart in Sailor Piece

Crimson Heart drops from Sukuna at Shibuya Station at a 2.5% rate. You need only one. The boss spawns every 7 minutes 30 seconds with 5 million HP. Plan for approximately 40 kills and 5 hours of farming with no Luck bonus.

After getting it, complete 3 quests (35M damage, 25 player kills, 15 boss kills), then submit 3x Dismantle Fangs, 1x Crimson Heart, 6x Cursed Fingers, 5,000 Gems, and 1,250,000 Gold to the Sukuna Trainer NPC to unlock Sukuna V1.

Use Kitsune race and Fortune Rune during your farm, stay on a private server to guarantee loot eligibility, and farm Sukuna every respawn cycle. Crimson Heart will drop. It is only a matter of time and consistency.