Post-capture, Hajime was anxious about parting ways with Myuu when they resumed their trip. Before setting off, Hajime and his companions reminisced about "The Seven Great Legends of Erisen," but they were all left unfulfilled. During the seventh and final adventure, a puzzling colossal creature appeared, transporting him to a ruined metropolis! While searching for the lost Myuu, Hajime came across an extraordinary encounter there.