In addition to her duties she also has to complete tests given by her superiors so that she can stay on Earth. She loves Kazuya and pushes the other girls away when she feels they're getting too close to him.
In addition to her obligations, she also has to meet the requirements set by her superiors in order to stay on Earth. She is particularly attached to Kazuya and tends to repel the other girls when they become too close to him.