Alex Briner. The Last Rank

I stubbornly headed toward my final rank—one that no one had ever reached. They called me the youngest mage to conquer such power.
But right during my promotion, I suddenly came to… in the body of my puny descendant—Alexey Briner.
As if someone did this on purpose.
From the boy I got a pile of problems, and the world split in two over a hundred years. But that won’t stop me—I will still obtain my final rank.
Now I just need to figure out why every person on Earth wants the Briners dead…