Aika Takazaki

The protagonist's stepsister. She is a pretty girl with a wide array of talents who achieves excellent results no matter what she does. Contrary to her dollish appearance, she has a sharp thing who doesn't mind saying insulting or sarcastic remarks to others. She is feared around her by those aware of her traits, but still has a fan-club due to her appearance. For better or worse, she is an honest girl, and has a respectful attitude toward those she respects.