A Claymore Miku. An interesting idea, yet how can such an interpretation be approached. I have thought of 2 ways. One is to actually take Miku's body and customize it into a Claymore Clare body like this figure:

The second approach is to turn Miku's vocaloid appearance into an armored version. This approach will take less work but, the end result may or may not be to my liking. In the interest of experimentation I decided to try this approach.
First, I modded the shoulder armor so that it can be placed on the figma shoulder while retaining its articulation. I did this using some glue and rubber. Next I test fitted the chest piece to see how it would look with her tie.
Miku looks pretty good with just the shoulder armor and chest piece on. However, I decided to start the modification to her legs to see if that will improve it.
I took the two bottom leg pieces and sanded the black paint off of them. Then I started to paint it silver like so.
I then finished painting it and test fitted it on Miku. I took off the skirt since I may do a skirt armor. Or maybe the lapels on her shirt can act like the skirt armor.
This still needs some work and much thought.