An artifact of unimaginable power capable of bridging the two worlds—a Wyvern scale—lies dormant beneath the abandoned hospital in Shibuya, but the convergence of powers threatens to trigger untold destruction. Destruction that will forge unlikely alliances for all those touched by the events transpiring in Shibuya. Having the Agakuras now seemingly in his corner is a boon, but as Polka and his friends delve further down the rabbit hole created by this other world and its denizens, can he rely on these newfound allies to pull him back from the brink should the chaos begin to swallow him up?