Blueberry Lakeside is a water element mage in Magical Vacation.
Blueberry is a calm and collected girl who comes from an aristocratic family in the service of the king. She is a tremendously hard worker, and is continuously at the top of her class as a result, but her frail body prevents her from strenuous activities. She is best friends with Lemon Airsupply, who saved her from bullies during childhood. She seems unsure how to react to Cassis Lumberyard's affection.