Spirit Stone Categories are the effect families that Spirit Stones are organised into in Beast of Reincarnation. Each stone belongs to one of five categories, and players slot stones from across the categories into Emma's armour to compose a parry-driven build.
The Five Categories
Every stone carries exactly one stat boost, drawn from the list below, alongside its own individual effect. The stat boost is what the categories name; the effect is what actually separates two stones in the same category. A handful of stones raise maximum FP instead, which sits outside the five.
Category | Effect Focus | Build Direction |
|---|---|---|
HP | Maximum health, healing on trigger, and survival cushion. | Sustain builds that lean on long fights rather than fast resolutions. |
Attack | Raw outgoing damage, particularly on the parry-driven punish window. | Damage-forward builds that convert each parry into a meaningful chunk of HP off the enemy. |
Defense | Incoming damage mitigation and resilience against the harder hits in late-arc encounters. | Tank-leaning builds that turn parries into safety windows rather than damage spikes. |
Skill Power | Improves the strength of Emma's combat skills and the impact of Bloom Arts fired through Koo's Command System. | Hybrid builds that use the parry rhythm to amplify both sword work and Koo's plant abilities at once. |
Critical Rate | Higher chance for outgoing strikes to land as critical hits. | Burst builds that stack parries into a damage-spike window, often paired with faster katanas. |
Slot Economy
Spirit Stones are slotted into armour rather than into the katana. The number of available slots scales with the armour piece.
Standard armour. Slot counts belong to the armor set, not to a tier. Each of the fourteen sets carries its own number, listed alongside its defense and elemental resistance.
Upgraded armour. Up to six Spirit Stone slots, available through later-arc upgrades.
Slot count is the practical cap on how many categories a build can lean on at once. A four-slot loadout is forced to specialise; a six-slot loadout can hold a primary category plus two or three supporting categories without diluting the primary effect.
Effect Triggers
The more useful way to sort the catalogue is by what sets a stone off, because that is what has to line up with a build. Parry is one trigger among many rather than the universal one.
Trigger | Examples | What Fires |
|---|---|---|
Start of battle | Fortification, Onslaught, Entanglement Stone | Opens the fight with a Fortitude or Vigor buff, or with the Entanglement Gauge and Koo's FP already part-filled |
Parry, dodge, riposte | Entangled Parry, Entangled Dodge, Entangled Riposte | A percentage chance to return 0.2 of the Entanglement Gauge and a point of FP |
Execution or assassination | Entangled Assassination, Final Infusion, Final Breath | Returns gauge and FP, or a slice of Emma's maximum HP |
Killing anything | Entangled Conquest | Returns gauge and FP on any combat kill |
Low health | Well of Fortitude, Well of Vigor, Mortal Awakening, Double-Edged Sword | Trades safety for output, or hands back defense once Emma drops below half |
Ranged work | Sharpshooter, Homing Shots, Empowered Headshots, Faster Reloads, Fire Rate | Adds tracking, headshot damage, reload speed or crossbow fire rate |
Status deaths | Last Lightning, Infernal End | Shocked or burning enemies discharge on death, hitting everything within several metres |
Florescent Recovery, Transcendent Bloom | Heals over time on activation, or adds damage and stagger while Koo's bar is full | |
Standing conditions | Momentum, Dark Approach, Critical Mind, Stone Mind, Iron Wall | Passive multipliers that apply while Emma is at full health, unseen, healing, or simply always |
Stones level up, and most of them scale in five ranks, so the same stone is a different proposition at rank 1 and rank 5. Upgraded Blighted variants of stones also exist with higher numbers than the base version.
Category Pairings
Pairing | Identity |
|---|---|
Attack + Critical Rate | Burst aggressor. Maximises damage per parry chain. |
HP + Defense | Survival anchor. Turns each parry into mitigation rather than damage. |
Skill Power + Attack | Hybrid duo. Each parry pays into both Emma's sword damage and Koo's Bloom Arts output. |
Skill Power + HP | Sustain caster. Leans on Bloom Arts as the main damage source while keeping Emma alive in the open. |
Acquisition
Spirit Stones are found through exploration, pulled from strongboxes, and dropped by Malefacts as Spirit Stone Ore. High-tier stones drop from elite enemies, which is why the Chapter 8 experience farm doubles as a stone farm. They can also be duplicated at the Cleanse Walker workbench once enough electronic brains have been collected to raise the Calculations research. Acquisition runs as a parallel discovery loop to Charms and Katanas, with each system rewarding off-path investigation rather than purchase or craft.
Counting the Catalogue
Both of the independent guide catalogues list around thirty-five named stones, and their rosters differ slightly at the margins, so no exact total is stated here. The category structure and the trigger groupings above hold regardless of where the final count lands.