Asa is initially a quiet and unsociable girl. She dislikes her classmates, frequently wishing they would drop dead and spurning any offers of friendship. She has a very negative outlook on the world, other humans and Devils and tends to assume the worst of others. She is however very fond of cats and would rather kill a human. Asa later admits to herself that her mean-spirited attitude towards her peers was a result of jealousy. She also suffers from low self-esteem. She's a tsundere