This looks to be a very impatient looking lady. I’m not quite sure what she’s done to those poor fellows in the background, but clearly she has left them in a somewhat discombobulated state. Either that or she dissolved their spinal cords. No time for foreplay or cuddling afterwards. Just wham, bam, thank you man.
My searching suggests this is fan art of an anime character called Annie Leonhart. I’m afraid I don’t know who the artist is.