Zero's Familiar: Volumes 4-5

Louise and her spellcasting companions have been sent on a top secret mission to the Kingdom of Albion, where the royal family is besieged on all sides by rebelling nobles. They are accompanied by the dashing Viscount Wardes, who is not only captain of the Griffin Crops but is also Louise's longtime fiance. Saito can't help but feel jealous of the impressive captain, but there's a more pressing concern: will they find the Prince of Albion in time before the kingdom is lost?