Nina to Usagi to Mahou no Sensha

During a war, individuals with magical abilities powered tanks by biting enchanted plates. After the war ended, rogue tanks continued to cause chaos. Nina, who was forced to use her magic in combat for years, became homeless and desperate for food. When she tries to steal, she meets a group of girls operating a tank. Instead of punishing her, they offer her shelter. The girls belong to a defense unit known as the "Rabbits," who protect their town from rogue tanks. Initially wary of their kindness, Nina gradually learns to trust them. She joins the squad, using her abilities to help defend others.