Mikami Inaba was battling a student from another school on her school's rooftop. During the fight, her friend Haru showed up. Noticing Mikami was distracted, the man lunged at her, which caused both of them to shatter the nearby rabbit cages and tumble off the roof. As Mikami plummeted, she frantically clutched onto a rabbit. Suddenly, a flash of pink light appeared. Mikami fused with the rabbit and acquired a second personality named Mimika. Now, Mikami only emerges when various people threaten her and her friends. Otherwise, she assumes the form of Mimika.