Breathing Boost is a traversal skill in Slayers 2 that wraps your character in a golden aura and raises movement speed for a short window. It is not sold, dropped, or traded. It is handed to you automatically the moment your Slayer Progress hits its cap, which means the whole unlock comes down to one grind at the Butterfly Estate.
Quick answer: Raise Slayer Progress to Lv 4 (Max) by blowing Large Gourds bought from Ren at the Butterfly Estate. That takes 37 gourds and roughly 325,000 Wen, and Breathing Boost lands in your N slot.
Breathing Boost requirements
Slayer Progress only exists after you are a full Demon Slayer, so everything below assumes you have already cleared Final Selection. Check these before you start spending:
- Final Selection completed and Mizunoto rank earned. The minimum entry level is 45, though 60 is far safer solo.
- Ren’s gourd shop at the Butterfly Estate unlocked.
- Around 325,000 Wen banked for the full run to max.
- Slayer Progress visible in the menu under Player Info / Progression.
Ren will not sell you anything until you do his errand. He is missing his blade, and it sits near the waterfall. Return it and his shop opens permanently.
When Wen is slowing your progress, bring Ginzo’s Jewelry Box back from his home in the Village Hidden in the Mist to unlock him at Mistfall Harbor. Since he purchases loot and coin items, he offers the most straightforward way to cover the gourd bill.
Breathing Boost numbers: gourds, Wen, and duration
| Detail | Value |
|---|---|
| Slayer Progress per Large Gourd | +300 |
| Gourds needed from zero | 37 |
| Approximate Wen cost | 325,000 |
| Unlock threshold | Slayer Progress Lv 4 (Max) |
| Skill slot | N |
| Active duration | About 15.20 seconds |
Gourd count scales with how much Slayer Progress you have already banked from earlier levels, so 37 is the figure for a clean run from the bottom. Each Slayer Progress level you pass on the way also grants permanent stat improvements, so none of the spend is wasted even before the skill drops.
How to max Slayer Progress with Large Gourds
How to use Breathing Boost and confirm it unlocked
Breathing Boost sits on the N key slot. Press it and a golden swirling aura forms around your character for the duration of the buff. That aura is the confirmation that the unlock worked, alongside the Lv 4 (Max) label on the Slayer Progress bar.
If the N slot is empty, your Slayer Progress has not reached the cap yet. Return to the Progression screen and check the level rather than the raw number.
Breathing Boost vs a standard horse
The buff runs for roughly 15.20 seconds before it drops, which is short enough that it works best as a burst between landmarks rather than a replacement for a mount. Timed against a standard horse over the same route, it is a convenience tool with a cooldown, not a permanent upgrade to how you cross the map.
That is the trade-off worth weighing before you commit six figures of Wen. The permanent stat gains from the Slayer Progress levels underneath are the real return, and Breathing Boost is what sits on top once the bar is full.
Codes
Working codes: Sorryforshutdown, Release26, PointsReset, EVILARTSPIN5. Open the code entry menu in game, type one exactly as written, and confirm to claim the reward.
