Revelations, new mutations, and new motivations abound in this penultimate collection! An odd observer in Barcelona pieces together the puzzle of the ZQN infestation before creator Kengo Hanazawa takes readers back to Japan and our remaining human survivors. Hideo and Hiromi discover something else that connects the two of them, as they head to Tokyo with a new ally. Murderous groups of human survivors are forced to band together, and the ZQN virus continues to evolve in massive ways. Go way further and get way stranger than the I Am a Hero film adaptation! Collects I Am a Hero original Japanese volumes 19 and 20.