Once Upon A Time In A Zombie Empire summary: Jaeha Lee, the sole survivor of modern Zombie Apocalypse, has lost her will to carry on with life. However, when she was woken up by a mysterious voice in her head, she has transmigrated as Princess Charlotte of the Olent Empire. Suspecting that there must be a reason behind everything, Jaeha struggles to find the meaning of life in her new world. It is when the peaceful empire is attacked by a horde of reanimated corpses, Jaeha realizes why she was reborn as Princess Charlotte: To fight the undead and survive 'til the endagain!