The Limitless Ring is one of the more sought-after drops in Sailor Piece on Roblox, and for good reason. Collecting enough of them is the gateway to unlocking the Gojo fighting style, a combat moveset inspired by the Jujutsu Kaisen character. There are no alternative methods, shortcuts, or secondary bosses involved — a single enemy is the sole source.
Quick answer: Defeat the Limitless Sorcerer boss at Shibuya Station repeatedly. Each kill has an 8% chance to drop a Limitless Ring. You need at least three rings to unlock the Gojo fighting style.

Limitless Sorcerer boss spawn location and respawn timer
The Limitless Sorcerer — the game's version of Gojo — spawns on a road at the back of the Shibuya Station map. After being defeated, the boss respawns every five minutes in the same spot. Because the spawn point never changes, you can park yourself nearby and chain kills without wandering the map.
The boss is not the hardest encounter in Sailor Piece, but you do need a reasonably high level to burn through the fight quickly enough for efficient farming. If you're undergeared, each attempt will eat into your respawn windows and slow down the grind considerably.

Limitless Ring drop rate and farming tips
| Detail | Value |
|---|---|
| Drop source | Limitless Sorcerer boss |
| Location | Shibuya Station (back road) |
| Drop chance per kill | 8% |
| Boss respawn time | 5 minutes |
| Rings needed for Gojo style | 3 |
An 8% drop rate means you should statistically expect roughly one ring every 12–13 kills, though randomness can stretch or shorten that. To speed things up, bring strong area-of-effect abilities so you can finish the boss before the next respawn window. Farming with friends also helps — a group can burst the Limitless Sorcerer down in seconds, letting everyone benefit from the faster clear times.

How to unlock the Gojo fighting style with Limitless Rings
Collecting three Limitless Rings is only part of the process. To actually obtain the Gojo combat moveset, you need to find the Limitless Sorcerer NPC — a separate, non-hostile version of the boss — standing on top of a skyscraper in the northeast corner of the Shibuya Station map. Speaking to this NPC reveals three objectives you must complete before the fighting style becomes available for purchase.
Step 1: Defeat 350 NPCs. These can be any enemies across the entire game, not just those at Shibuya Station. Heading to early-game islands and using AOE abilities on low-level mobs is the fastest approach.

Step 2: Use 350 abilities. You don't need to hit or kill anything for these to count. Simply spam any abilities you have equipped until the counter fills up.
Step 3: Defeat the Limitless Sorcerer boss 10 times. This is the same boss you've been farming for rings. If you haven't yet collected your three Limitless Rings, completing Steps 1 and 2 first means these 10 kills also serve as additional farming chances.

Once all three objectives are done, return to the Limitless Sorcerer NPC on the skyscraper. The NPC will sell you the Gojo fighting style in exchange for several Limitless Sorcerer drops, including three Limitless Rings.
Additional uses for Limitless Rings — Ascend 2
Beyond the Gojo fighting style, Limitless Rings are also part of the item requirements for reaching Ascend 2 at the Ascension vendor located on Sailor Island. If you plan to push your character's progression that far, stockpiling more than three rings during your farming sessions is a smart move. Since you're already cycling through Limitless Sorcerer kills for the fighting style quests, any extra drops you pick up along the way save you from returning to Shibuya Station later.
The entire loop is straightforward once you know the pieces: head to Shibuya Station, farm the Limitless Sorcerer on the back road every five minutes, and collect rings at an 8% clip. Three rings plus the NPC's quest objectives unlock the Gojo fighting style, and any extras go toward Ascend 2 progression. Bring friends and strong abilities, and the grind goes faster than you'd expect.