Onimusha: Way of the Sword — All Power Stones and Oni Stones Locations (54 + 55)

This page lists every Power Stone and Oni Stone location in Onimusha: Way of the Sword — all 109 upgrade materials, area by area, with the side jobs, Chance Encounters, Mysteries of Kyoto and Oni Portals that hand them out. Fully upgrading every skill with them earns the Well-Rounded trophy, one of the two upgrade grinds in the Platinum roadmap.

What do Power Stones and Oni Stones each buy?

They are the two currencies of the skill trees, and they do not mix:

• Power Stones fund the basic and special skills — swordplay nodes such as Reflex Combo, Chain Issen and Deflect, plus utility purchases like Petrify tiers, Flat-Out Sprint, Items: Quick Use, Soul Absorption boosts and the two Charm Capacity upgrades. Early nodes cost 2 stones each; the later ones cost 3.
• Oni Stones fund the Oni abilities and weapon skills — Oni Vision: Treasures and Oni Strength tiers on the gauntlet side, and every armament’s skill rows: Two Celestials combo upgrades, Wind-Whipper power and range, Earth-Shakers charge levels, Firebird Flute shots, Flashing Void Break Issen, and Still Water’s golden-wave upgrades. Same price curve: 2 stones early, 3 later.

Most skill rows only go on sale after an Oni Portal is cleared — the first portal unlocks the 2-stone tier, the second and third unlock the 3-stone tiers — which is why the trophy guide routes stone hunting after the portals. For the weapons those Oni Stone rows upgrade, see the Oni Armaments locations page.

Can you miss any stones?

No — with one timing rule. Free roam stays open until the point of no return before the final mission, The Clash at Rendaino; keep a manual save at the prompt and you can clean up everything from there. Two Power Stones (#51–52) come from the final mission itself, past that cutoff.

Stones do not carry into New Game+ as items — but they spawn again, so a second playthrough tops up anything you skipped. Genma Notes and Lion Dogs, by contrast, do carry over; their pages are all 23 Genma Notes and all 36 Lion Dogs.

All 54 Power Stone locations

Listed in PowerPyx’s guide order; numbers are theirs, so video guides line up with this table. Eastern Kyoto rows span several story phases — the area is revisited throughout the game.

#	Area	How to get it
1	Kiyomizu-dera Temple	Chest on a small island in the Oni Refuge section — shoot the bridge with an arrow to raise it, then cross
2–3	Eastern Kyoto	Reward for completing The Silent Gauntlet
4	Eastern Kyoto	Reward for completing Careful What You Wish For
5–6	Eastern Kyoto	Reward for completing Windswept Kennin-ji
7	Eastern Kyoto	Chest in the small courtyard southeast of the Kamo River – East Spirit Mirror
8	Underground Laboratory	Chest on Underground Level 3
9	Kiyomizu-dera Temple	Chest behind a Malice Barrier
10	Eastern Kyoto	Chest north of the Kiyomizu-zaka Slope Spirit Mirror
11–12	Eastern Kyoto	Reward for completing Bloodbath on the Bridge
13	Eastern Kyoto	Chest on the west island of Kyoto
14	Eastern Kyoto	Reward for clearing the second Oni Portal
15	Eastern Kyoto	Reward for completing Shadows Fall
16–17	Eastern Kyoto	Reward for completing A Wife’s Prayer (Mystery of Kyoto)
18	Kiyomizu-dera Temple	Chest on the path behind the Oni Wall
19–20	Eastern Kyoto	Reward for the Ace Archer: Nijo-jo Castle Chance Encounter
21	Eastern Kyoto	Reward for the An Ugly Business Chance Encounter
22	Eastern Kyoto	Chest southwest of the Gojo Street – West Spirit Mirror
23	Eastern Kyoto	Reward for completing A Tempest at the Temple
24–25	Eastern Kyoto	Reward for The Growling Ghost Chance Encounter
26–27	Eastern Kyoto	Reward for the Ace Archer: Kyoto Imperial Palace Chance Encounter
28–29	Eastern Kyoto	Chest where you fought Sasaki Ganryu, beside the Yasaka Pagoda Spirit Mirror
30–31	Eastern Kyoto	Reward for completing Okuni’s Kabuki Dance
32	Eastern Kyoto	Reward for completing The Demon on the Mount
33	Eastern Kyoto	Reward for clearing the third Oni Portal
34–35	Eastern Kyoto	Inside the Hidden Oni Treasure #3 chest
36	Mount Oe	Chest in the Valley — after moving around the platforms, return to the wall-run platform, drop down and follow the path
37	Mount Oe	Chest in the same room as the Storehouse Spirit Mirror
38–39	Eastern Kyoto	Reward for completing A Haunted Distraction
40–41	Eastern Kyoto	Reward for completing The Night Parade (Mystery of Kyoto)
42–43	Eastern Kyoto	Inside the Hidden Oni Treasure #4 chest
44	Eastern Kyoto	Chest north of the Higashioji Street Spirit Mirror
45	Eastern Kyoto	Chest just south of Yasaka Shrine
46–47	Eastern Kyoto	Reward for completing Storm Chaser
48	Arashiyama	Chest in the bamboo grove
49	Arashiyama	Chest at the north end of the swamp
50	Arashiyama	Chest in the swamp
51–52	Eastern Kyoto	Reward for completing The Clash at Rendaino — the final mission, past the point of no return
53	Eastern Kyoto	Chest at the dead end of the village west of the Hozu River Spirit Mirror
54	Eastern Kyoto	Chest northwest of the Sandbar – Near Stage Spirit Mirror

PowerPyx numbers #53–54 inside its Eastern Kyoto run, though both describe Arashiyama-side landmarks (the Hozu River village and the Sandbar stage); they are collected during the same late-game phase either way.

All 55 Oni Stone locations

Same rules: PowerPyx’s guide order and numbering, Eastern Kyoto rows spanning several revisits. “Hidden Oni Treasure” is PowerPyx’s name for the five bonus chests unlocked through Oni Portals.

#	Area	How to get it
1	Eastern Kyoto	Reward for completing Careful What You Wish For
2	Eastern Kyoto	Chest in Kyoto guarded by a Cleaver Genma
3	Eastern Kyoto	Reward for completing A Strength in Refuge
4	Eastern Kyoto	Reward for completing Patching up the Pouch
5	Eastern Kyoto	Reward for completing What Lurks in the Shadows
6	Kyoto Imperial Palace	Chest in an alcove of the Kyoto Imperial Palace
7	Eastern Kyoto	Reward for the Pale Lights in a Night Sky Chance Encounter
8–9	Eastern Kyoto	Reward for completing The Roots of All Evil
10	Eastern Kyoto	Chest west of the Gojo Street – East Spirit Mirror
11	Eastern Kyoto	Chest on the island in the west of Kyoto
12	Eastern Kyoto	Reward for clearing the second Oni Portal
13	Eastern Kyoto	Reward for completing Shadows Fall
14–15	Eastern Kyoto	Reward for the Ace Archer: Kiyomizu-dera Temple Chance Encounter
16	Eastern Kyoto	Reward for completing A Tempest at the Temple
17–18	Eastern Kyoto	Reward for the Something in the Water Mystery of Kyoto
19–20	Eastern Kyoto	Inside the Hidden Oni Treasure #1 chest
21	Eastern Kyoto	Reward for completing Noisy Neighbors
22–23	Eastern Kyoto	Inside the Hidden Oni Treasure #2 chest
24	Eastern Kyoto	Reward for completing The Demon on the Mount
25	Eastern Kyoto	Reward for clearing the third Oni Portal
26	Eastern Kyoto	Reward for The Odd Couples Chance Encounter
27–28	Eastern Kyoto	Reward for The Faceless Mystery of Kyoto
29–30	Eastern Kyoto	Reward for Worm-ly Ways Mystery of Kyoto
31	Mount Oe	Chest in the cave level, past the second Genma blocking the Oni-kui Mushi Barrier
32	Mount Oe	Chest on the climb from the Castle Courtyard to the Cave — first outcrop on the right
33–34	Eastern Kyoto	Reward for the Ace Archer: Mount Oe Chance Encounter
35–36	Eastern Kyoto	Reward for the A Fishy Story Chance Encounter
37	Eastern Kyoto	Chest in an alleyway south of the Kiyomizu-zaka Slope Spirit Mirror
38	Eastern Kyoto	Chest just north of Enma Hall
39–40	Eastern Kyoto	Chest south of the Yasaka Shrine Spirit Mirror
41	Eastern Kyoto	Chest upstairs in a house just east of the Shijo Street Spirit Mirror
42–43	Eastern Kyoto	Reward for completing In the Light of an Icy Moon
44	Arashiyama	Chest east of the Temple Spirit Mirror
45	Arashiyama	Chest west of the Shijo Street Spirit Mirror
46	Arashiyama	Chest north of the broken bridge in the southwest of Kyoto
47–48	Arashiyama	Reward for the Ace Archer: Arashiyama Chance Encounter
49–50	Arashiyama	Inside the Hidden Oni Treasure #5 chest
51	Arashiyama	Chest southeast of the Kiyomizu-dera Slope Spirit Mirror
52	Arashiyama	Chest in the bamboo forest in the south of Kyoto
53–54	Shanoah Castle	Chest in the same room as the Keep Area Spirit Mirror
55	Oni Refuge	Descend past the broken temple to the Buddha-seated Oni statue; take the path behind it and Oni-Power wall-run across — the stone lies along that route

Why the stone counts differ between guides

Three numbers circulate. PowerPyx’s dedicated location pages enumerate 54 Power Stones and 55 Oni Stones (109 total), and its trophy roadmap agrees — so does this wiki’s own trophy guide. But PowerPyx’s overview checklist page currently prints 54 + 54 in one list and 53 + 54 in another while totaling all categories to 274, and G2A’s checklist also carries the 54-Oni-Stone figure. Community threads during launch week even cited “55 Power Stones” the other way round. The dedicated per-item pages are the only sources that actually enumerate every entry, so this page follows them: 54 + 55.

Well-Rounded and what to do next

Spending the full 109 on every skill node completes Well-Rounded, half of the upgrade-pair grind whose other half (50 crafting materials) is covered in the trophy guide’s collectibles table. While hunting stones you will rescue half of Kyoto anyway — the Genma Notes page and the Lion Dogs page cover the other two trophy-tracked collectible sets, and the walkthrough hub shows where each story phase gates which area.