The Vexations of a Shut-In Vampire Princess, Vol. 7 (light novel)

After returning from her hot springs vacation, Terakomari is immediately thrust into another crisis when Lingzi Ailan, princess of the Enchanted Lands, shows up at the Mulnite Palace begging for help. According to Lingzi, the Grand Chancellor of the Enchanted Lands is in the process of overthrowing the current ruler, and he's forcing her to marry him to solidify his grasp on power. Sympathetic to Lingzi's plight, Komari agrees to travel to the Enchanted Lands to help the girl break off her marriage. But in the background of the Grand Chancellor's coup, something even more terrifying is brewing...