Once upon a time, it was a story of the time called the prehistoric age.
In general, those who are called "people" lived together regardless of their species.
Humans, elves, dwarves, beastmen, wizards and mages, as well as many others, the ancestors of the species that live in the modern world.
They helped each other and cooperated with each other in the face of difficulties; it could be said that their lives were truly ideal.
The spirits and fairies, who felt good about them, helped them in their lives.
It was never a sign of hierarchy; these women also worked together as part of the group.
As the years passed, the two girls thought
"Are we relying too much on the spirits," they thought.
Of course, we do what we can do, but we can't do it ourselves - for example, if there's damage caused by a natural disaster, we have no choice but to rely on the spirits.
And that has put a huge burden on the spirits.
"The two girls want to reduce the burden on the spirits even more, so they begin to develop a variety of things with their friends.
It began to produce results little by little, despite many failures.
At first, they were all genuinely happy.
"This will lighten the burden on the spirits," they said.
However, as the development progressed, the number of useful tools increased, and they became less dependent on the spirits, some of the relatively younger generation among their peers began to disrespect them.
It is a poison that is very, very sweet and dense, and gradually eats away at their thoughts.