Onimusha: Way of the Sword — Upgrade Materials: Fine Silk Cloths and Tamahagane

Fine Silk Cloths and Tamahagane are the two rare materials behind Onimusha: Way of the Sword’s equipment endgame — 25 of each, spent at the Spirit Mirror, powering the Dressed to Kill trophy (“Enhance all equipment to the maximum level”, per PowerPyx). This page explains what they upgrade, how the 25+25 supply divides up, and lists every location, map area by map area. For the skill materials — the 109 Power and Oni Stones — see the skills guide and its locations page.

What do the materials upgrade?

Three gear tracks enhance at the Spirit Mirror, each with its own material diet:

Track	Rare materials	Notes
Clothing	Fine Silk Cloth (capped by Cloth; lower levels use Cotton/Leather)	Health and stamina upgrades
Sword	Tamahagane (lower levels use Iron/Tempered Iron)	Damage upgrades
Oni Gauntlet	Malicite family + boss materials (Byakue’s Talisman, Dohatsu-ten’s Horn)	Uses neither of this page’s materials

Spending venue, per PowerPyx: “Equipment gets enhanced at the Spirit Mirror, automatically unlocked during the mission ‘The Oni’s Apprentice’. Once in the menu select the ‘Equipment Enhancement’ tab.” Charms are a separate system entirely — Enma Hall, Favor and Red Souls, on the charms guide.

How does the 25 + 25 supply divide?

Exactly enough — with a catch:

Material	Gear track needs	Pouch upgrades need	Total found
Fine Silk Cloth	23 (Clothing to max)	2 (Default pouch levels 2–3)	25
Tamahagane	23 (Sword to max)	2 (Resistance pouch levels 2–3)	25

“If you spend all 25 Tamahagane on the Sword or all 25 Fine Silk Cloth on Clothing, you will leave the corresponding Hozuki Pouch upgrades unfunded” (gamers.wiki). Dressed to Kill only demands the 23; the last two of each fund the pouch track behind the Medical Marvel trophy. The pickup/activity split: Tamahagane runs 17 physical pickups and 8 activity rewards; Fine Silk Cloth runs 16 pickups and 9 activity rewards.

All 25 Fine Silk Cloth locations

Organized as PowerPyx groups them. The Source column distinguishes activity rewards (mission, quest, Mystery, Chance Encounter, hidden chest) from fixed chests.

Eastern Kyoto

#	Source	Location / condition
1	Mission reward	The Stage is Set at Kiyomizu (mission identification per gamers.wiki — single-source)
2	Chest	Behind the Kiyomizu-zaka Slope Spirit Mirror
3	Quest reward	“A Strength in Refuge”
4	Quest reward	“Patching up the Pouch”
5	Mission reward	“What Lurks in the Shadows”
7	Mystery reward	“The Blessed Man” Mystery of Kyoto
8	Mission reward	“The Roots of All Evil”
9	Chest	West island in Kyoto, near the Oni Portal
10	Encounter reward	“Ace Archer: Nijo-jo Castle” Chance Encounter
11	Mission reward	“A Tempest at the Temple”
12	Mission reward	“To Live is to Suffer”
13	Chest	Northwest of the Gojo Street – West Spirit Mirror
14	Hidden chest	Hidden Oni Treasure #1
15	Hidden chest	Hidden Oni Treasure #2
16	Chest	South of the Sandbar – Near Stage Spirit Mirror
17	Chest	Upstairs of a house west of the Shijo Street Spirit Mirror
18	Hidden chest	Hidden Oni Treasure #3
19	Chest	South of the Yasaka Pagoda Spirit Mirror
20	Hidden chest	Hidden Oni Treasure #4
21	Chest	West of the Kiyomizu-dera Slope Spirit Mirror
22	Chest	House south-east of the Yasaka Shrine Spirit Mirror
24	Hidden chest	Hidden Oni Treasure #5

Underground Laboratory

#	Source	Location
6	Chest	Underground Level 3, through the mask-key door

Arashiyama

#	Source	Location
23	Chest	Southwest corner of the Swamp of Arashiyama

Shanaoh Castle

#	Source	Location
25	Chest	In the house where you crawl through the second level — instead go down to the first level, where there is a pool of blood; the chest is outside the house

All 25 Tamahagane locations

Eastern Kyoto

#	Source	Location / condition
1	Mission reward	The Curse of Kiyomizu-zaka Slope (mission identification per gamers.wiki — single-source)
2	Chest	North of the Kamo River – East Spirit Mirror
3	Chest	West of the Kiyomizu-zaka Slope Spirit Mirror, in a courtyard
4	Chest	Northwest corner of the Dharma Hall Temple Grounds
5	Quest reward	“The Light of Vengeance” (gamers.wiki notes an optional branch on the route — check it rather than assuming the reward is automatic)
6	Chest	Northeast of the Kiyomizu-zaka Slope Spirit Mirror
7	Chest	East of the Gojo Street – East Spirit Mirror
8	Chest	Just after the Dohatsu-ten fight
9	Mission reward	“Bloodbath on the Bridge”
10	Encounter reward	“Ace Archer: Kiyomizu-dera Temple” Chance Encounter
11	Chest	West of the Gojo Street – West Spirit Mirror
12	Chest	Just south of #11’s mirror
13	Mission reward	“To Live is to Suffer”
14	Encounter reward	“Ace Archer: Kyoto Imperial Palace” Chance Encounter
15	Chest	Courtyard next to the Yasaka Pagoda Spirit Mirror
16	Chest	Just north of the Sandbar – Near Stage Spirit Mirror
17	Chest	Just south of the Shijo Street Spirit Mirror
19	Hidden chest	Hidden Oni Treasure #4
20	Chest	North of the Gojo Street – East Spirit Mirror
21	Mission reward	“In the Light of an Icy Moon”
22	Chest	Southwest of the Shijo Street Spirit Mirror

Mount Oe

#	Source	Location
18	Chest	In the house with the Oni-kui Barrier, in the castle courtyard

Arashiyama

#	Source	Location
23	Chest	Along the path from Togetsu-kyo Bridge
24	Encounter reward	“Ace Archer: Arashiyama” Chance Encounter

Shanaoh Castle

#	Source	Location
25	Chest	The room right after the Byakue fight

How do the Hidden Oni Treasures work?

Six of the entries above — cloth #14, #15, #18, #20 and #24, plus Tamahagane #19 — sit in Hidden Oni Treasure chests, and they behave differently from normal chests: the Chance Encounter must be active before the chest exists. “If you visit the correct rooftop, waterfall, temple, shrine balcony, or pagoda roof before accepting the corresponding encounter, the reward may not appear” (gamers.wiki). The marker is approximate; once on site, “use your Oni Eyes (Oni Vision) in the right spot to uncover the treasure itself” (Gaming ProMax). The full encounter list is on the side content guide. Hidden Treasure #4 is the double dip — it holds both a Tamahagane and a Fine Silk Cloth.

Can you miss or farm them?

• Not missable. Free roam runs to the point-of-no-return warning before The Clash At Rendaino, and “no Tamahagane or Fine Silk Cloth location was identified as post-story-only” (gamers.wiki). After the credits, the Continue menu drops you back before the finale — the safety net explained on the New Game+ guide.
• Finite per playthrough. “These are finite rewards for the current playthrough, so use the checklists below instead of searching for a repeatable rare-material farm” (gamers.wiki). No source documents a farm.
• A shop exists — as a fallback. After “Careful What You Wish For”, Yorimasa’s Monument trades Red Souls for consumables and upgrade materials (IGN). Whether it ever stocks these two rare materials specifically is single-source (gamers.wiki: “limited rare-material stock”) and unconfirmed — do not plan a shop-purchased Dressed to Kill around it.
• New Game+ resets everything relevant: the materials, the gear levels they bought, and the quests that award them all start over. Plan the trophy on one save.

Where does this fit in the Platinum?

Dressed to Kill is one of the two “fully upgraded” bookends of the Platinum roadmap — the other being Well-Rounded’s 109 stones. Both sweeps are roadmap step two’s free-roam cleanup, parked before the finale on your first run.