The album cover was a drawing that had a very psychedelic look to it, there were at least two girls on the cover drawn in a sort of anime style, one girl had a sword and I think the other was split open but they both had a look of euphoria on their faces. The album came out some time in the 2000s or 2010s. I looked through various image search engines to no avail. Thanks.
Never mind I found it. It was this piece by Makoto Aida which was used by Laurel Halo.