Monstrous creatures are causing chaos in Mikagura Kiriwo's city. Following in his father's footsteps, Kiriwo has developed a serum that enables him to transform into a towering monster temporarily. With this newfound power, he endeavors to protect his community from one of these monsters but is met with hostility instead. Despite his good intentions, Kiriwo is mistaken as a malevolent force, labeled as the "black monster" responsible for the widespread destruction. Even his peers and the media disapprove of his actions, resulting in a classmate dropping out of school due to the havoc brought upon by the "black monster." Can Kiriwo vindicate himself and prove that his monster form was meant to be a savior?
