Devil Princess (Light Novel) Vol. 4, The

TO THE FRONT LINES!
Yulucia, a demon reborn into a human body, has now been formally recognized as the Saint. So when the daemon army starts invading human countries, it’s time for her to head out with the Hero’s party to fend them off! Yeah, right. Yulucia’s just a ten-year-old girl, no way she’s going to be sent to save the world.
Nevertheless, with the situation growing dire on the front lines, Yulucia, Noel the Hero, and Prince Rick the paladin—along with over two thousand people—set off on a journey to face the daemon king and his army. It’s a horribly doomed mission indeed…and Yulucia can’t wait!
Series Overview: In the Holy Kingdom of Talitelud, the second prince welcomes his precious newborn Yulucia as a blessing—but no one suspects the truth: she’s a devil in disguise. Once a fearsome demon of the shadowy realm, Yulucia longed for a brighter world filled with family, friends, and light. Defying her dark origins, she tore through a summoning gate and was reborn as a human baby.
Now revered as the prophesied Saint, Yulucia hides her demonic hunger beneath an innocent facade. But how long can she keep her secret? As dangerous schemes close in and whispers of her true nature spread, Yulucia must balance her love for humanity with the darkness that still resides within. And while she may have escaped the shadows, they are never far behind—and neither is her hunger.