The Too-Perfect Saint: Tossed Aside by My Fiancé and Sold to Another Kingdom (Manga) Vol. 4

After seeing her sister save the neighboring country of Parnacorta from a demonic invasion, Mia vows to take revenge on the man who betrayed Philia--the second prince, Julius. Meanwhile, Philia has an audience with the king of Parnacorta to request aid for her hometown, even if it once spurned her for being insufferably perfect. Bolstered by support for the first time in her life, Philia begins to hatch a secret plan that could reach all corners of the globe!