The weather gradually became warm.
The development of the war situation on Earth was also gradually becoming detrimental to the humans.
The defense line at the Great Wall, having been built over many years and being heavily guarded, was still unbreakable, and the other countries were still continuously providing supplies and manpower. But the continuous harassing attacks by the Kingdom of Light was too much for the humans, who were gradually losing their hold.
The ruling foundation of the Kingdom of Light was based on an Oracle system comprising a large number of temples and churches. This country was practically an utter theocracy, where the regime depended on the existence of divine rights. When its theocratic system had been destroyed and scattered all over the place, their governmental system was also almost on the verge of collapse.