Natagumo Mountain (那田蜘蛛山) is a mountain where the majority of it is covered with thick trees. The entire place has plenty of spider webs scattered around. The mountain serves as a home to the Spider Family.


The Spider family wants to live in peace and whenever an intruder approaches the mountain, the Mother Spider Demon uses her threads to control the intruders and then kills them. The mountain is ruled by Rui, a lower five Demon of the Twelve Demon Moons, and also the head of the Spider Family. Rui makes sure that all of his family members are doing their task to keep them safe.


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