After studying the Holy Dragon Sword Skill, Reiger's interest in supreme-grade sword techniques had grown immensely.
In this world devoid of an underground city to explore, Reiger desired to grow rapidly as before, and mastering sword techniques had become a necessary endeavor.
Otherwise, the only way for Reiger to grow swiftly was to enter the battlefield, where plenty of enemies awaited his conquest.
This made Reiger realize that perhaps when he later employed Dimensional Travel to other worlds, he might encounter similar situations.
Not every world was like the Earth Mistake World, with abundant monsters threatening humanity that he could vanquish.
If he were to travel to more peaceful worlds in the future, with insufficient enemies to conquer, Reiger's progress would come to a halt.
This was something he had to avoid.
Therefore, Reiger felt that his current priority was to find a sword technique to study and ensure that his growth did not stagnate.