Takazaki Aika

Likes: Chocolate fondue, stuffed toys.
Dislikes: Protagonist, mint.
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.