In the anime "About my reincarnation into slime this file", with the rise of the Meng King, the major forces have also surfaced, what awakening level demon king, what the original three demon kings, etc., in the original Meng King is still a ball, these strong people have not shown their faces, and now the Meng King has entered the realm of the strong, so the pattern of animation has also opened, and among these strong people, the "five rare dragon species" that have been discussed by everyone have also surfaced. (There are spoilers below, and the relationship between the five dragon species is deeply analyzed)

White Ice Dragon
In the second season of "Reincarnated Slime", the original demon king Chiay, that is, the original red, Ki, once appeared in his territory a silver-haired little sister, when the red and platinum demon king Leon was talking, Leon directly called her one of the only remaining dragon species in the world, the white ice dragon Verusado, this name must be very familiar to everyone, because she has a Viru word in her name.
Storm Dragon
At the beginning of the first season of "Reincarnated Slime", king Meng met Virudora who was sealed by the brave in the labyrinth, that is, the storm dragon, he was actually the fourth brother of the dragon, the little brother of the first four dragon species, and also the younger brother of the white ice dragon in the second season, both of them have the word Weiru in their names, which can be seen to be related, but the strength of the storm dragon is far lower than that of the white ice dragon.
princess
Figure out the White Ice Dragon and the Storm Dragon, let's straighten out the relationship between Milim and the Storm Dragon, in fact, Milim is not a dragon species in the strict sense, but a combination of the Dragon Emperor and humans, so her race belongs to the Dragon Demon People, she once showed a dragon-shaped fighting posture when fighting with the Beast King Kalion, which is to inherit the bloodline of the Star King Dragon, and the Star King Dragon is The elder brother of Virudora.
Star King Dragon
Star King Dragon is also one of the original rare dragon species, also revered as the creation of the same existence, now the White Ice Dragon to the original red, original red, originally challenged the Star King Dragon Big Brother, the result was seconds, it can be seen that among several major dragon species, the Star King Dragon is the most powerful, in different versions of the "Rebirth Slime", it has been said that the Meng King may be the reincarnation of the Star King Dragon, with his soul fragments.
Chaos Dragon
White Ice Dragon, Storm Dragon, Star King Dragon, plus the Scorching Dragon Veru Gelondo, which has not yet appeared in the anime, and is known as the world's four rare dragon species, and in the later period, we often hear a Chaos Dragon, Earth Emperor Dragon, Viru do la Gaia or something, which should refer to a doppelganger pet created by the Star King Dragon for the Dragon Emperor's daughter, and after being destroyed by the human emperor in the later stage, the soul mutated into a Tyrannosaurus, commonly known as the fifth dragon species. So Verudra called Milim a niece, which is also correct. If there is something wrong with the above, I hope that everyone will correct it in the comment area. (Image from the Internet)