Quick answer: Find Incense Ash in a chest atop a timber platform on the Crimson Forest cliff, close to the Red Serpent House bell. Approach from higher ground: climb the plank road to the plateau, descend the ladder, then turn left.
What Incense Ash does
Incense Ash is filed under “Phantom Edge Upgrade Materials” in Phantom Blade Zero. Its card reads: “Coarse ash mixed with fragments of herbs and wood. When made into incense, its smoke rises in thin strands that linger without dispersing. Old tales say that if one draws a circle with this ash and calls a name three times, the wandering soul will appear within it.” The effect line underneath reads: “Required to upgrade Summon-type Phantom Edges to Lv. 10.”

Use it at a bell by selecting Upgrade Equipment; the weapon upgrade guide walks through the process. Each Phantom Edge category uses a separate material through Lv. 10. Incense Ash is for Summon-type edges, while Ancient Timber upgrades Ranged-type edges.
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In Chapter 1, the chest sits along the Crimson Forest route, past the low-road double gate at Forest Outpost. You can’t access its platform from the road; the path climbs up and around before dropping back onto it.







The same chest also gives two more materials, and each item card shows up in turn: Mechanical Gear, required to upgrade Artifice-type Phantom Edges to Lv. 10, and Darkfire Charcoal, required to upgrade Destruction-type Phantom Edges to Lv. 10.
Buying Incense Ash from Quick Hand Zhang
Quick Hand Zhang offers Incense Ash at his Village of Lu, Pangzhen, and Meigu Village hideouts for 832 Remnant Dust. It isn’t available at his Crimson Forest hideout.
Summon-type upgrade materials past Lv. 10
Incense Ash only takes a Summon-type Phantom Edge to Lv. 10. Two later materials handle the rest of the climb.
| Material | Summon-type upgrade range |
|---|---|
| Up to Lv. 10 | |
| Lv. 10-20 | |
| Lv. 20 to max level |
Illusory Incense Ash carries the effect line “Required to upgrade Summon-type Phantom Edges from Lv. 10-20.” Its card reads: “When worship of the Lady of the Veil first arose, devotees would mix Sevenfold weed leaves into their incense. The smoke rose in fine strands, and its scent sent the mind reeling. With repeated use, however, its potency dwindled. Few use it now.” Quick Hand Zhang sells it for 992 Remnant Dust at his Pangzhen and Meigu Village hideouts.
Incense Ash for the Lady finishes the line with “Required to upgrade Summon-type Phantom Edges from Lv. 20 to max level.” Its card reads: “Incense ash mixed with the ashes of wooden puppets and scraps of red silk flowers. Before puppets became so numerous, people firmly believed this mixture could call back their missing friends and family.”






