No offense, but this translation is pretty janky. The name of the girls ability changes in the chapter itself, With how its described and what it does, both names are wrong, it should have been called "Enhancement"(defined as:bring out good qualities, improve it) not "strengthen" or "enforcement". Also the MCs comment about "having 4 materials in total", that really needs to be edited to something like "It will be like having 4 pieces of normal material." Lastly, while "material" works, if there is some other specific name for this, it should be used. Something like "Evolution material" or "low grade low tier evolution material", 'material' can literally be anything. Short hand to make it shorter if you wanted, could call it "Ev mats".