

Sailor Piece Wiki
Shinjuku Island
Late game
Shinjuku Island is a late game island in Sailor Piece. High-density cursed conflict. It is accessible to all players regardless of level. The island hosts 2 notable NPCs. 2 bosses can be found or summoned here.
NPCs on Shinjuku Island
| NPC | Function |
|---|---|
| Strongest in History Trainer | Unlocks a fighting style or weapon |
| Strongest of Today Trainer | Unlocks a fighting style or weapon |
Bosses
| Boss |
|---|
| Strongest in History |
| Strongest of Today |
Hidden Collectibles
- Slime Puzzle piece: Near broken buildings and strange tree on far side
- Hogyoku Fragment: Upper city path
What to Do on Shinjuku Island
- Unlock new weapons or fighting styles from trainers
- Farm Strongest in History, Strongest of Today for materials, titles, and accessories
- Farm normal enemies for rerolls, chests, keys, and crafting materials
How to Get Here
Use a purple teleport portal on any island and select Shinjuku Island from the destination list.

Shinjuku Island
Wiki Page
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