Power Stone Locations and Uses
Quick Answer
Power Stones (力石) unlock and power up basic abilities in Onimusha Way of the Sword — the always-on combat skills such as Reflex Combo, Chain Issen, Deflect upgrades, Blazing State and your Oni Bow. Current release checklists disagree on the final total (53–55 are reported), so this page treats the count as conflicting guide data, not a fixed official number. Find them in large black chests, hidden chests revealed by Oni Vision, encounters, Oni Portals and some quests — not as a reliable normal-combat drop.
Who this is for: players deciding which skill unlocks deserve their scarce stones, and anyone who keeps confusing Power Stones, Oni Stones and Red Souls.
What Power Stones Do
Basic abilities sit in their own upgrade tree. Unlike Red Souls (which pay for the higher power tiers of a skill you already own), Power Stones are the unlock currency for the skills themselves and several mid-tier upgrades (PowerPyx structure; GamesRadar: “the former are needed for powering up your Basic Skills, including sneak attacks and your Oni Bow”).
GAMEPLAY VERIFIED Examples from guide data: Reflex Combo and Chain Issen unlock during the story mission The Oni’s Apprentice at a cost of 2 Power Stones; later tiers of the same skills cost Red Souls (4,500–6,500), with intermediate Power Stone steps (3 each) after Oni Portals.
Where to Find Power Stones
- Large black chests: the main source, placed around Kyoto and mission areas. Ordinary small chests never hold them (GamesRadar).
- Hidden chests: when your Gauntlet glows blue, trigger Oni Vision to reveal a hidden chest — many of these hold stones (GamesRadar).
- Map icons: the treasure icons on your map point at the visible chests; hidden ones need Oni Vision.
- One-tree-shade fights (一樹之陰): rewards include 1–2 Power Stones — e.g. the encounter The Silent Gauntlet pays two (PowerPyx/Gamerch).
- Oni Portals (鬼の門) and Kyoto tales: clearing portal battles and certain side stories pays stones (e.g. the Wife’s Prayer tale pays two).
- Story bosses: Rasho-gan drops one Power Stone as part of his reward (Polygon).
Unverified — pending verification
Per-stone location lists exist (Gamerch covers all 53, PowerPyx has a checklist), but individual chest coordinates are outside this page’s scope and can change with patches. Use those lists as a checklist, not gospel.
Best Upgrade Uses
Because 53 stones cover every basic skill in one playthrough (PowerPyx), you cannot permanently lock yourself out — the real question is order:
- Deflect and Chain Issen lines — defensive counters are the combat backbone and benefit every fight.
- Absorb Souls While Attacking (2 Power Stones) — stops enemies stealing souls and speeds the whole economy.
- Charm Capacity (2–3 stones) — more charm slots are pure power; see the skill tree for the capacity unlocks.
- Oni Bow basics — needed for several puzzles and boss tethers (Rasho-gan).
Side Content Rewards
Power Stones are the main reason to clear one-tree-shade encounters and early Kyoto tales: they pay in stones where normal exploration pays in cloth and iron. Check quest reward previews on the map before choosing what to do (material guide).
Missable Status
CURRENT_GUIDE_REPORT Individual chests can be missed on a save, but the exact cross-run stone carry-over list is not a CAPCOM first-party table. Use the NG+ guide before assuming skipped stones can be recovered in the next run. The Clash at Rendaino remains the practical cleanup checkpoint for the current save.
FAQ
Sources — Last Verified 2026-09-12
- PowerPyx — All Power Stone Locations (53): powerpyx.com
- PowerPyx — All Basic & Special Skills: powerpyx.com
- GamesRadar+ — Power and Oni Stones explained: gamesradar.com
- Gamerch — 力石の場所一覧 (全53個): gamerch.com/onimusha-ws/1009586
