Nobuhiko, together with the kaijins he gathered, tries to recover the former Gorgom. An old friend visits him and informs him that the Kingstone is under Aoi's care, so he goes to Kotaro... Meanwhile, Aoi is happy to see her father, Hideo Kawamoto again. However, Aoi is suddenly pursued relentlessly by her father who has turned into a kaijin. But she is saved by an unexpected person.

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.

The three priests conduct a ritual in response to Dounami's lamentation, but are rejected by the "Creation King". Meanwhile, an attack on the Gorgom Party is carried out. Darom clashes with Kotaro, but to protect the "monsters" he pleads for the succession of the "Creation King." Meanwhile, Aoi and her childhood friend Shunsuke Komatsu free the captured people and try to escape…