Sakura Harukaze is the younger sister of Kazuma Harukaze. She resides with her brother and their horse Lovely on a farm near Mount Fuji. Their daily life centers on farm work and caring for Lovely. After the arrival of Hinkle, a messenger from the planet Muzanda, and the robotic horse Robony, her brother engages in defending Earth against alien invaders. Sakura continues her role within the household throughout these events. She has pink hair, typically worn in a ponytail, and contributes to the farm routines alongside her brother and Lovely both before and after the messenger's arrival.