Project Thouser is entering Phase 6 which involves compiling Zetsumerise Key data to complete the process. Gai tasks Yua with retrieving a specific Key. And to do that, she needs to act as a bodyguard for the Hiden-produced drama series.
Aruto and Horobi begin their decisive battle as Azu gleefully watches what she believes is Ark’s prediction coming true. Across the country, Humagears are rising up in protest to demand fair treatment and equal rights from humans. Humans, however, continue discriminating Humagears which only continues to breed malice and hatred in them.
Horobi addresses humanity to lay blame on them for the Ark’s creation and how Aruto becoming Ark is more proof that humanity must be destroyed.
Aruto cries out in agony from what he’s just done. Azu tells her Ark-sama not to be sad since she is here for him.
Izu is face-to-face with Horobi who henshins with a new Key. Before he can kill Izu, Aruto comes flying in to protect her. He runs to attack Horobi, but Horobi grabs him by the neck.
Aruto and Izu collect the scattered Keys as they, Isamu, Yua and Jin wander through the rubble of Hiden Manufacturing. Aruto says it’s alright as they and the Humagears can always start over to reach their dreams. And that includes MetsubouJinrai.net
Back at Hiden Manufacturing, Izu tries and is unable to contact ZEA. Jin says it’s all over now. There is no way for them to defeat Ark. Aruto regains consciousness and says to not give up. He is confident he can defeat Ark.
Gai says the reason he could not accept Aruto and Humagears was because he loved Hiden Intelligence. And now it is time for them to defeat the Ark by working together.
At Hiden Manufacturing, Izu returns with Ai-chan who reports that she was able to befriend Yua and Isamu. And also that the two of them appear to have made up.
Ark returns to Horobi’s body and henshins. He completely overpowers Aruto and with an All Extinction finisher, forces him to dehenshin. Isamu tries shooting at Ark, but it doesn’t even leave a scratch.