What items are used for upgrading?
There are 7 upgrade components that can be used. Each component has 2 variants. 6 of those upgrade components can be used with armor only, the remaining 1 can only be used for weapons, The component used to increase the attack power of weapons is burr (and fine burr). Meanwhile the component used to increase the defense of an armor is protection potion (and luxury protection potion). The remaining 5 components provide elemental resistance and can only be used on armor. The 5 components are crystal(ice resistance), sodium(electric resistance), iron(fire resistance), silver(poison resistance) and bone powder(wind resistance.) Their variants are as follows fine crystal, fine sodium, fine iron, fine silver, fine bone powder.