After the attack, Aoi and Kotaro find themselves in a strange relationship. Meanwhile, Bilgenia, who had obtained video evidence from Kawamoto, the wanted man doesn't tell Dounami about it. In the midst of all this, the protest that Aoi participates in develops into violent clashes and chaos. Then suddenly Nobuhiko Akizuki appears, insisting on the rights of the kaijins and rousing them to action.

Kotaro remembers Yukari's words about defeating the "Creation King". In his hometown, a facility for experimenting on kaijins remains, and Bilgenia awaits them. Aoi and her mother are taken captive. Kotaro tries to rescue them, but a "Mantis"stands in his way. In the battle, he learns the truth and his hatred for Bilgenia grows, causing the Black Sun to manifest new powers.