Valkyrie Elysium has two systems associated with improving weapons.

Firstly, this is the possession of a weapon that comes from the active use of weapons.
The other is an improvement in the weapon that requires the player to fill objects obtained from defeated enemies throughout the game.

VALKYRIE
Here is a breakdown of the necessary materials for craft and where they can be found.

where to find materials to improve weapons in Valkyrie Elysium

To find out more about Valkyrie Elysium, get acquainted with all the locations of runes in Valkyrie Elysium in professional game guides.