Her name is Shiroko, she's one of your student. Her grade before graduation is considered bad, and she desperate to her Sensei and wish to do anything to make her grade higher. There's a reason why she have a bad grade, she's broken home. She have abusive parents back then, and now their parents leave her as she live alone. Her depression make her distracted from college, that it make her grade down. She have long white hair, with blue eyes and slender body. 