B-ko Daitokuji

B-ko Daitokuji is well-known in Graviton High as the daughter of a local industrial tycoon. As a scholastic genius, she is seen living a luxurious lifestyle including limo rides to school and carrying haughty airs in her demeanor. At school, a small group of classmates act as her loyal subordinates. Although seemingly very calm and poised in public, and always deferring to her teachers' authority, B-ko has a tremendous temper which flares whenever she doesn't get what she wants. Her desire to steal C-ko's affection away from A-ko develops from regular obsession to all-consuming, devoting all her resources, her subordinates, and her mechanical genius to her goal.