The Divine Princess Stands Atop the Ocean

At first, Li Shiyuan was just an angler who couldn't catch fish, but managed to hook power lines instead. Then, as you might expect, she changed sex and became a "human generator," before transmigrating to a different world ruled by the Great Qin Empire for 2,133 years. At first, Li Shiyuan was thrilled that her status as a Divine Maiden would let her rise to the top overnight. Then she could use her Divine Maiden body to pilot giant robots and get close to the other Divine Maidens, while also romancing the young woman whose body she had possessed. But unfortunately, "the bitter age of losers" is the defining character of this world's Qin Empire. This world even has more than one transmigrator, and Li Shiyuan is forced, time and again, to get swept helplessly into the whirlpool of history. Many years later... "Your Majesty, how do you think the next generation of transmigrators will judge our generation? As a Divine Maiden of courage and wisdom? One of the few nobles from outside the imperial clan to wield real power? A hero who turned the tide of war? A pioneer of a new age? Or... a scheming butcher? The chief lackey of you and the Grand Princess? The cause of war? A gatekeeper of the old order?"