Dragon Powder

Background
Dragon Powder is a special powder made from fiber of a dragon. The quality depend on the grade of dragon itself. Dragon powder is one of materials used for creating Holy Sword.

Seryuu City
While exploring the Seryuu City Labyrinth, Satou find six Dragon Powder in the remaining of a house that's swallowed during labyrint creation.

When Satou want to buy some magic books from a magic shop in flea market, he's been declined by the owner. The owner, a magician-looking old woman, doesn't want to sell the magic books to some random people. She only sell the books to talented people, the one that have certain amount of magic measured by a magic instrument she has. Since Satou doesn't want to risk his enormous magic power to be discovered, he refuse to use the device. Satou then use dragon powder to bargain. By using that he manage to get a hold of several magic books, some reading materials, canes and amulets, catalysts for making potion, and also some magic tools worth of 100 gold coins.

Muno Territory
From some papers obtained from flea market back then in Seryuu City, Satou manage to get his hand on knowledge about holy sword creation. Apparently the paper contain a record of a man's study about the making of holy sword. One of required materials is dragon powder. Using the information, he successfully created a pseudo holy sword.

Borunean Forest
Satou back to Duchy capital to request the creation of several magic scrolls from Natalina. Unfortunately, Natalina can't make some of the advanced magic ones, the only one that can make them has been invited as a teacher at royal capital academy. That person also not going to cooperate unless it interests her. After knowing that the person interest is holy sword making, Satou offers his dragon powder. That dragon powder created from Black Dragon Heiron scales, so it's ranked as high-quality. Knowing that, the overly excited Natalina agree to comply with the unreasonable request that Satou told earlier.

Trivia

 * The fact about dragon powder is a material for making a holy sword is a highly classified information in Shiga kingdom