After surviving the attack on Sarugaku headquarters, Sousuke Banba continues his investigation into the Kagewani monster hybrids. Possessing the ability to harness the Kagewani's power, the researcher now has a way to destroy the creatures. However, despite the advantages of this ability, it has one significant downside: Sousuke now struggles to keep his sanity, as the power threatens to consume his body. Soon, both old and new threats begin to emerge, as the upper ranks of Sarugaku become active again and an assassin with a personal grudge sets her sights on Sousuke. Regardless, he steadfastly presses forward with his mission, determined to uncover the origins of the Kagewani and eliminate their threat once and for all.