good question, I think it's latter.
So for alterations, it's based on sculpting the spiritual body in a way that optimizes the flow of magical energy to produce a certain stat up or extra skills.We sculpt your spiritual bodies in a way that maximizes the flow of energy from Master to Servant.
However reinforcement
Conceptually improves the circuits based on the magus's element attributes etc. So things are getting better, but only in a certain direction. Therefore, no choice.Since what’s being enhanced is the meaning of an object’s existence, using it on a knife will increase its sharpness, using it on food will increase its nutrition, and using it on a maid will increase her cuteness.
Of course, if an object’s purpose is too vague, it will be impossible to strengthen it.