How to get Stone Breathing in Slayers 2

Gyorei turns you away until you have an Axe and Mace. After that he wants 4 Beast Cores, then takes 4,000 Wen when the training begins. No Demon Horns at all: one mini boss and a night of core farming cover the whole list.

Stone Trainer Gyorei: You need 4 Beast Core for this Quest! Above, the bar of The Stone Hashira Gyorei in the same yard, with Arcs of Justice x1 (10%).

The order that saves you a second trip

1
Axe and Mace
A 15% drop from the Stone Trainee, up from 7% at launch. Half of all players have it by kill 5; nine in ten by kill 15.
2
4 Beast Cores
From the horned demons that roam at night. Where and how many kills: Beast Cores.
3
4,000 Wen
Charged the moment you accept the training; he never asks for it out loud, so keep this much on you.
4
Level 25
The option reads Ill learn Stone Breathing(Lv 25). Wall Climb in the skill tree gets you up the last rock.

Seen 5 Beast Cores quoted elsewhere? The trainer’s own line says 4, and it has not changed since release.

A player climbing a brown rock face at night, with an area banner at the bottom of the screen — Climbing the last rock wall at night. The banner at the bottom reads `Stone Sanctuary`; the minimap shows Hidden Mist Village and `Verdant Cliffs` next to it.

Getting into Stone Sanctuary

Start at the Bamboo Grove spawn crystal and head past the Mother Bear.
Keep on the lower path through the Wilderness. The upper climb leads to the Thunder trainer instead; the two areas sit side by side on the map.
Turn left at the bottom and climb the rock face. The banner that pops up reads Stone Sanctuary.
He stands against the wall of the big wooden hall, lattice windows behind him.

The same yard holds The Stone Hashira, also named Gyorei. That one is a world boss with a health bar, not the trainer; killing him costs Reputation.

The Axe and Mace is not a ticket, it is your weapon

The Stone trainer's dialog box refusing a player who has no weapon — `Stone is not taught to empty hands. Find yourself an 'Axe and Mace' first, then we will speak.` The boss bar above still shows the pre-release rate, `Arcs of Justice x1 (5%)`.

An inventory card for the Axe and Mace weapon with its stats — `Axe and Mace`, `Legendary`: `A chained axe and mace for Stone Breathing, heavy enough that each step feels like a vow to stand firm.` `Class: Tank`. `+2.2 (Additional Damage)`, `1.04x (Additional Damage Factor)`, `+1.5 (Block Points)`, `+0.85 (Damage Reduction)`.

Every Stone move is cast with it in hand, and it levels its own mastery bar beside Stone’s. It is a Tank-class weapon with a damage-reduction line. The trainee that drops it is a 600-health mini boss on a grassy hill, next to the Thunder trainee’s marker on the minimap.

Night on a grassy hill with the Stone Trainee's health bar and one drop listed — `Mini Boss` `Stone Trainee`, `600 / 600`, `Common Chest`, and one drop: `Axe and Mace x1 (7%)`. `Exp +185`, `Wen +83`.

His training, in order

1. Meditate
2. Push ups
3. Boulder Push
4. Boulder Split
5. Parkour Dungeon
6. Defeat the Stone Trainee

The Parkour Dungeon is the long one: a timed obstacle course with three hearts. How each step works is on the training page.

The five moves and what each costs

Key	Move	Skill points	Stone mastery	Note
Z	Volcanic Conquest	none	–	Free the moment Stone unlocks.
X	Seismic Burst	6	–
C	Upper Smash	9	27
V	Stone Wall	12	40
B	Arcs of Justice	15	53	Also needs the skill drop from the Stone Hashira, below.

Arcs of Justice drops from The Stone Hashira in Stone Sanctuary. It was 5% before release and is 10% now: the v.09 boost to boss skill drops added five points here. The drop only counts once you know Stone and the moves before it. Names like Volcanic Rock or Demolishing Blow are not what the game calls these moves.

Is it worth it?

Tanky and armored, but slow: the moves take time to land, which keeps Stone out of the top PvP tier. A recent change reportedly added a second-hit guardbreak and an armored ultimate, with a counter that comes back less often.

ABeebom
BDestructoid
APro Game Guides

How the others compare: the tier list page and every trainer on breathing styles. A free reset code is on the codes page if you change your mind.