Although the entire Japan is actually under Dorothy's possession now, the homebody witch is not the type to exploit power for personal gain. She is a craftsman, able to earn her living through her skills.
Therefore, the Great Barrier still needs to be built, and it must be constructed beautifully.
Actually, the semester is almost over, and Spider Teacher assigned the building of this Great Barrier to her as a final exam. If it's not constructed beautifully, she might fail the exam, and the honor student persona of this young lady would collapse.
In Dorothy's vision, the function of this Great Barrier is the self-purification of the ideal homeland.
The Great Barrier is rooted in the Japan Dragon Vein, which is symbiotic with the so-called Human Emperor. If the Human Emperor becomes immoral, the Dragon Vein shifts, and the new dominant Dragon Vein will nurture a new Human Emperor. This is a simple cycle system.
