After Isamu sustains serious injuries during his fight with Horobi, he is taken to the HumaGear hospital for treatment and placed in the care of a HumaGear surgeon. Complicating matters however, MetsubouJinrai.net continue their attacks, leading Fukuzoe to order all of the hospital's HumaGears to be shut down and forcing Aruto to choose whether to protect the life-saving androids or stop the rampaging Gigers. Learning of Aruto's indecision, Yua gives Is the Mammoth Zetsumerise Key, who uses it to access data from Hiden Intelligence's Zea satellite, revealing the existence of a power capable of matching the Gigers: the Breaking Mammoth Progrise Key. Is also discovers that leaked footage of the Assassin HumaGear transforming contains Yua recording it, though she later denies any knowledge of it.

Feeling that his HumaGear costar is unable to accurately convey profound human complexities, Owada threatens to leave Hiden Intelligence's drama series. While Aruto tries to persuade him not to, the Assassin HumaGear continues to gun for the world-renowned actor. Yua brings Aruto to ZAIA, revealing she actually works for them and was seconded to A.I.M.S. because ZAIA provides all their equipment. ZAIA President Gai Amatsu then demands that Aruto sell Hiden Intelligence to him, claiming that he must do so before his company fails.