Great Tang: I Picked Up a Diary, and Li Er’s Whole Persona Fell Apart

Li Wei, an illegitimate son stranded on the frontier, gets his hands on Emperor Li Shimin's Daily Records. By following updates, he can earn coins to exchange for items, and he can also learn everything the emperor does.

With the Alliance on the Wei River upon them, Li Wei, who can barely survive, decides to use the Daily Records to find a way for himself and the villagers to stay alive. Then he unexpectedly meets the emperor and reveals who he is!

But when he discovers that the Daily Records include his own story, and that following updates will earn him exponentially more coins, he decides to become a villainous supporting character and treat Emperor Li Er as a heartless tool.

After Li Shimin calls Li Wei an unfilial son, his ministers drag him along to apologize to Li Wei.

The ministers: Your Majesty, just admit you were wrong! We need his pig-breeding techniques to spread!

Li Shimin: If you weren't capable of benefiting the Tang dynasty, I really couldn't stand that smug face of yours, you despicable little man!