If you are trying to craft the sword Gale Wing in Tales of Arise, you will need Beast Mane materials to craft it. You can get Beast Mane fast very early on in Tales of Arise when you go to fight the Ice Wolf Leader.
When you kill the Ice Wolf Leader, it will drop Beast Mane as a reward, and you will be able to craft the Gale Wing Sword if you get at least two Beast Manes.
Later on, you will eventually need the material again, which in that case, you can simply farm Alpha Withered Wolves n the Aqfotle Hills and Adan Ruins.
If you want to farm Alpha Withered Wolves, simply head to a region where they spawn and kill all of them that you can find. Once you fully cleared the area of all Alpha Withered Wolves, fast travel back and slay all of the wolves again.
Doing so will allow you to farm enough Beast Manes for whatever you need them for and earn decent gald, XP, and even SP. That said, once you have enough of the materials, you can head back to a blacksmith or merchant to turn the materials into items such as weapons or sell them.
Check out some of our other Tales of Arise guides!