Naruto has used many mythology from all around the world from hindu myths using the chakra ,indra,ashura to having japanese samurai and ninjas.”
BY VIVEK JAIN
One piece has used every single myths from all over the world from religious to cultural myths. We can find mermaids, giants, God's, spaceships, aliens, Atlantis, heaven, poseidon, uranus and so many more
Goku was inspired from the main fighter of journey to the West, Son Wukong the monkey King. Goku's nimbus cloud, his pole and him transforming into a giant ape are all referenced to him.
Shinigami are the death God of the Japanese culture .Shinigami (死神, literally "death god" or "death spirit") are gods or supernatural spirits that invite humans toward death in certain aspects of Japanese religion and culture.
Kamishama kiss is based on Shinto religion from Japan. In it we can see many kami which are the spirits all around us some of the useful and helpful one of them are worshipped and other just lives all around us.
Another anime based on Shinto mythology which has used the nine tails spirit in the form of a male protagonist Inuyasha . It also has used many ghost spirit known as Yokai which roam in the human world and scare them
It shows the war which is going to happen between the war among the gods and representatives of human to decide the fate of mankind , to check if the humans are any more worthy to still roam the earth. it has used all God mythos from Hindu to Greek, Egyptian and norse.