Senran Kagura X Metsubojinrai.Net: Rising of Darkness

"The era of humanity is coming to an end, the will of the Ark demands it"

Ishigami is a young man who wishes to bring humanity to extinction. In order to do so, he starts an organization known as Metsubojinrai.Net and begins using specialized tools called Zetsumerisekeys to amass an army and to resurrect the Ark. Aside from the Zetsumerisekeys, Ishigami also requires two Super-Secret Ninja Scrolls to bring the Ark back to full power. With eyes set on Hebijo and Hanzo Academy, Metsubojinrai makes their move. When shinobi students and malicious machines clash, who will come out on top?