I Have an Army Too, Father— Episode 54

Leontius, Crown Prince of the Celestial Empire, spent ten years as a hostage in Qi to protect his nation. Upon return, he was betrayed by his father and brother Luther. In his new life, he abdicates and joins Qi's Empress Xandra. Pursued by Luther, he leads a military campaign. Using his strategic genius and innovative firearms, he conquers his homeland, exposes Luther's murder of his mother, and confronts his father Lucien. He ultimately triumphs over the Six Empires' alliance, captures their rulers, and ascends as the supreme sovereign.