In the Land of Leadale, Vol. 4 (light novel)

High elf Cayna’s life following her recent move to the countryside with her adopted daughter Luka is both eventful and peaceful. One day, Cayna takes a trip out to Felskeilo with the local innkeeper’s daughter Lytt, Roxine the maid, and Luka in tow to meet her eldest daughter, Mai-Mai. When they arrive, however, Cayna receives word from a nearby Guardian that another Guardian Tower is running out of MP and needs Cayna’s help. There’s just one catch-the tower is in the shape of a gargantuan blue whale!