Sousuke Banba starts his examination of the Kagewani monster hybrids after surviving the attack at Sarugaku headquarters. The researcher now has the capacity to harness the Kagewani's power, giving him the ability to eradicate the animals. However, despite the benefits of this talent, it has one huge drawback: Sousuke is now struggling to save his sanity as the power threatens to swallow his body. Soon, old and new dangers emerge, as the highest echelons of Sarugaku reactivate and an assassin with a particular vengeance sets her sights on Sousuke. Nonetheless, he presses on with his quest, determined to seek down the Kagewani's roots and eradicate their danger once and for all.