Radiant Rune and Primordial Rune are not pure luck farms anymore. In Sailor Piece, both can be forced through Infinity Tower pity.

The best route is simple: farm Infinity Tower, use a full damage build, run Cosmic Being if possible, and reset at floor 54. That setup gives the best balance between clear speed and pity progress.

• Sailor Piece Rune Pity: The Numbers That Matter
• Best Reset Floor for Radiant and Primordial Rune
• How Many Runs to Hit Rune Pity?
• Best Spec for Infinity Tower Rune Farming
• Best Build for Radiant and Primordial Rune Farming
• Best Farming Route for Radiant Rune and Primordial Rune
• When to Reset Before Floor 54
• Common Mistakes That Waste Time
• FAQ
• What is the Radiant Rune pity in Sailor Piece?
• What is the Primordial Rune pity in Sailor Piece?
• What is the best reset floor for Infinity Tower?
• Is floor 54 always the best?
• What is the best spec for rune farming?
• Should I use a luck build?
• How many floor 54 runs for Radiant Rune?
• How many floor 54 runs for Primordial Rune?

↖ Sailor Piece Rune Pity: The Numbers That Matter

Every Infinity Tower floor adds pity progress. That means even bad drop luck still moves us closer to a guaranteed rune.

Radiant comes first. Primordial takes longer.

The grind becomes much easier when we stop chasing random lucky runs and start tracking floors per hour.

↖ Best Reset Floor for Radiant and Primordial Rune

The best reset point right now is floor 54.

Why? Because floor 54 is the sweet spot.

It gives enough floors per run without making each run drag. Pushing higher can increase drop chance, but if the run takes too long, your pity progress per hour drops.

If your damage is strong, set the reset to 54 and loop it.

If floor 54 feels slow, reset earlier. A clean floor 45 run beats a painful floor 54 run.

↖ How Many Runs to Hit Rune Pity?

At 54 floors per run, the pity grind becomes predictable.

You can still get either rune before pity. But these numbers give us a real finish line.

That matters. It keeps the grind measurable instead of feeling endless.

↖ Best Spec for Infinity Tower Rune Farming

The best spec for this farm is Cosmic Being.

It has what tower farming needs most: constant pressure. Less downtime means faster waves, smoother runs, and better floors per hour.

Ice Queen is still strong. Its range and V move make it reliable for Infinity Tower. But if we are talking best-in-slot for rune farming, Cosmic Being wins.

↖ Best Build for Radiant and Primordial Rune Farming

Use a full damage build.

Do not cripple your clear speed just to force more luck. Since pity is based on total floors cleared, damage usually beats luck here.

The goal is not one lucky run. The goal is stable, repeatable clears.

From actual tower farming, the biggest time save comes from smoother wave clears. A build that clears consistently always beats a flashy setup with awkward downtime.

↖ Best Farming Route for Radiant Rune and Primordial Rune

Use this route:

1. Enter Infinity Tower.

2. Equip your best damage build.

3. Use Cosmic Being if you have it.

4. Use Ice Queen if you do not.

5. Set reset floor to 54.

6. Loop runs until pity or drop.

That is the cleanest method.

No over-pushing. No random resets. No weak farming setup.

Just damage, speed, and pity progress.

↖ When to Reset Before Floor 54

Floor 54 is best only if you can clear it fast.

If not, lower the reset point.

Use this rule: the best floor is the one that gives the most floors per hour.

Not the highest floor. Not the hardest floor. The fastest repeatable floor.

↖ Common Mistakes That Waste Time

Avoid these if you care about efficiency.

The reset setting matters more than people think. If you manually restart late every run, you are bleeding time.

Set it once. Farm clean. Repeat.

↖ FAQ

↖ What is the Radiant Rune pity in Sailor Piece?

Radiant Rune is guaranteed at 7,500 total Infinity Tower floors.

Every cleared floor counts toward pity.

↖ What is the Primordial Rune pity in Sailor Piece?

Primordial Rune is guaranteed at 10,000 total Infinity Tower floors.

It takes longer than Radiant, but the progress is guaranteed.

↖ What is the best reset floor for Infinity Tower?

The best reset floor is 54 for most strong builds.

It gives the best mix of speed, floor count, and pity progress.

↖ Is floor 54 always the best?

Only if you clear it smoothly.

If floor 54 is slow or risky, reset at 45–50 until your build gets stronger.

↖ What is the best spec for rune farming?

Cosmic Being is the best spec for Infinity Tower rune farming.

Ice Queen is the best backup.

↖ Should I use a luck build?

No. Use a full damage build.

Faster clears mean more floors per hour, and more floors mean faster pity.

↖ How many floor 54 runs for Radiant Rune?

About 139 runs.

That assumes you clear 54 floors each run.

↖ How many floor 54 runs for Primordial Rune?

About 186 runs.

You may get lucky earlier, but pity guarantees it at 10,000 floors.

Summary

The fastest guaranteed way to farm Radiant Rune and Primordial Rune in Sailor Piece is through Infinity Tower pity.

Use this setup:

• Radiant Rune: guaranteed at 7,500 floors
• Primordial Rune: guaranteed at 10,000 floors
• Best reset floor: 54
• Best spec: Cosmic Being
• Best backup spec: Ice Queen
• Best build: full damage

If floor 54 is smooth, farm it nonstop. If it is slow, reset earlier until your damage improves.

The winning formula is simple: more floors per hour = faster pity = faster runes.