Armed with Gears—superpowered battle-ready prosthetics—Youkou has joined the Jackalopes in their fight against the monsters known as "Spiders." Humans transformed as a side effect of their own Amenotori-supplied transplants, the Spiders are becoming more and more active—and destructive. But one distinct group of Spiders, the Shikagura, is more organized than their randomly ruthless brethren, and they're honing in on one particular target...the Jackalopes!