Rino, who has prepared for her own demise, entrusts "Nomi" with a "key", and he hands it to her daughter Aoi. Aoi is reunited with Kotaro after he regains consciousness, and she tells him with a smile that she has protected the Kingstone. Nobuhiko, who has risen to a new pinnacle by denying Darom's methods and crying out for change in Gorgom, points his beloved road sector back to his hometown.

Black Sun transcends time and soars in the sky. Believing in his own justice, he heads to overthrow Shadow Moon for the sake of the planet. The two throw themselves into the final battle for their destiny. After a fierce battle, Nobuhiko entrusts the Kingstone to Kotaro and returns to Yukari. But behind the scenes, a shadow that had been watching the whole thing is lurking suspiciously...