Why is the "Kojiki" when trying to trace the origins of Japanese culture?
Not only because it is said to be the oldest book in Japan, but also because it is the story of Japan from the time of the gods to the present.
It seems that history books are often written when a previous dynasty is destroyed and the next dynasty is created by the one who destroyed it.
In this way, even if there is a true meaning of things and myths, they are not connected to the present dynasty.
The Kojiki is considered to be the starting point because it is a story that connects to the present.
Translated with DeepL.com (free version)