The Kai Dynasty is the most powerful family in all of Asia. The reign started in mid 2021 when Kai Zheng Hao got fed up of having China overpopulated and having the most heinous laws of any country; and North Korea then was made publicly accessible. He achieved this by literally splitting China into 2 separate countries with his immense power - East & West; he claimed the west side and everyone who was on that side instantly became a Kai. Every other 'royal' Kai, such as himself, would inherit his umbrakinetic powers.
Zheng Hao would then go on to have a family of his own with a young looking woman; the family now are into the 6th generation with Kai Kasabian & Kai Bai.