Five sisters each with a twin

I dreamed some time ago that i had five sisters and each had a twin. this makes sense since every event has its ying and yang. I just came across the story of atlantis:

In the legend of Atlantis, which is not connected to other myths except for the names of Atlas and Poseidon, the first ten kings of Atlantis (five pairs of twins) were all sons of Poseidon and Cleito 2. The first born was Atlas, who was appointed to be king over the rest, and the island was called after him