Me! The Fainthearted Emperor's Brother, the Rebel Army's Self-Proclaimed God of Slaughter!

[Historical + Transmigration + Alternate History + Slaughtering His Way Across the World + Absolute Trust] Li Yu transmigrates to the Great Xia Kingdom. From the start, 200,000 rebels have surrounded the city. The foolish emperor is his big brother, and seventeen more rebel armies are on their way. Foolish Emperor: Imperial Brother, take the empress and flee. Have a child. It can be yours, and I’ll count it as mine too. Li Yu: All right, I’m off. Ding-dong! The Foolish Emperor Support System has arrived... My big brother treats me like family. How could I abandon him like an old coat? I had no choice before, but now I’m going to be a loyal minister and a great general! For my foolish emperor of a big brother, I’ll slaughter my way across this entire world!