Just now having a closer look at this and now I am wondering if there maybe some nice artworks in hiding or perhaps an official artbook may be annouced or maybe something they release with special editions of the anime blurays.

The Fletcher cover on the left looks similar to her above art only wearing gym clothes. Need some help working out where the two cat girls on the right are from.

Edit: Remembered that the two cat girls are Hamman and Sims. Not sure on this one but that cover may be an edit of their official art with changes to the position of their hands and Sims being flipped. That and the fact they are now sporting lovely buruma.

If AL starts releasing art of all the destroyers in buruma I am going to need to make sure I have a will ready.