The ultimate challenge in Sailor Piece. Summoning: Defeat the Gojo Boss to obtain a Limitless Key, then talk to the Strongest Boss Summoner NPC on Shinjuku Island. Requires a full team.
| True Sukuna Finger | 1% (Mythical) |
| Heian Artifacts | 5% (Legendary) |
| Golden Ticket | 50% |
Uses Malevolent Shrine (Domain Expansion). Stay out of the red zone.
| Curse Finger (Spec Item) | 5% |
| Sukuna's Robe | 10% |
Spams Hollow Purple (Slow moving nuke) and Red (Explosive pushback).
| Mysterious Eye (Spec Item) | 10% |
| Blindfold | 15% |
HP: 6M • Sailor Island Spawns: 8m30s
Drops: Shadow Heart (3%), Shadow Dagger (5%)
HP: 12.5M • Christmas Island Spawns: 5m
Drops: Silver Comets (Crafting), Dragon Scale
HP: 10M • Boss Island
Drops: Holy Grail (5%), Excalibur Skin
HP: 40M • Raid
Drops: Slime Extract, Rimuru's Sword
| Boss | HP | Location | Spawn Time | Notable Drops |
|---|---|---|---|---|
| Strongest of Today | 125M | Shinjuku Island | Summon (Limitless Key) | True Sukuna Finger (1%), Heian Artifacts (5%) |
| Aizen | 25M | Hueco Mundo | 7m 30s | Aizen Blade materials |
| Ragna | 12.5M | Christmas Island | 5m | Silver Comets, Dragon Scale |
| Jinwoo | 6M | Sailor Island | 8m 30s | Shadow Heart (3%), Shadow Dagger (5%) |
| Sukuna | 5M | Shibuya Station | 7m 30s | Curse Finger (Spec), Sukuna's Robe |
| Gojo | 4M | Shibuya Station | 7m 30s | Limitless Key, Mysterious Eye, Blindfold |
| Yuji Boss | 3.75M | Shibuya Station | 5m | Yuji spec materials |
| Qin Shi | — | Boss Island | Summon (Boss Key) | Emperor Seal (Spec) |