Game of Thrones: From a deserter to a high-ranking official

[A Side Story of House Dragons] Tiberius Mordred, transmigrated into the body of a mercenary leader's nephew, only wanted to live a wealthy life in Essos, far removed from the impending Dance of the Dragons. However, fate intervened. The Battle of the Golden Spurs in Essos made him famous, forcing him into the limelight and unwillingly drawing him into the Dragonflight succession. Thus, the story took a turn for the worse: he wanted to train an army for Prince Damon, but ended up creating Westeros's first standing army, the Dragonfire Army. He wanted to develop Crab Claw Peninsula to make a little money building houses, but ended up building a commercial empire that monopolized the sugar and wine trade. He wanted to write a royal history to flatter the Targaryen family and earn royalties, but ended up becoming the Targaryen family's propaganda manifesto. Finally, as Tiberius stroked the barbs on the Iron Throne, he said to his men with a touch of resignation, "Gentlemen, I really did consider deserting at first!" (300,000 words already in the manuscript, feel free to read on)