"Real Angels"

These people inside the chariot had a soft and gentle aura around them, looking benevolent and pure. 

If anything....with a pair of gold-white wings and a white halo...these beautiful young women with hair and eyes of various colors looked more like angels. 

Yes. The angels. 

Celestials were the 'copies' of angels, just like how the sacred beasts in this world who would be legendary beasts depending on their bloodline, were also the 'inferior copies of the original goods. 

The elves in this world weren't the original elves from the elf dimension, because the original ones should be living in a much more powerful world...

Maybe a magic world or something. 

After all, although there were rumors about Phoenix and dragons, people in this world had only seen Phoenix and not western or eastern dragons. 

It was said that the beasts in this world, the races, and the people were all 'inferior genes' of the original ones.