Improvement Material

Improvement Material (screw) is a type of item/resource to be consumed within the game when players want to improve their equipment by using Akashi's Improvement Arsenal after they have obtained Akashi. There're different methods available in the game to obtain these improbement materials, including quest reward, event map clear reward, exchange different other item like medals or hishimochi for improvement material, as well as purchase by using real money shop in the game.