In the Land of Leadale, Vol. 4 (manga)

Traveling as a guard for Elineh's caravan, Cayna visits the northern kingdom of Helshper. There, she stops by the Sakaiya shop to deliver a letter Mai-Mai had entrusted to her...and comes face-to-face with her grandson—an elf named Caerick! But then a casual comment of his manages to incur Cayna's wrath, and all hell breaks loose!?