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.
As part of her job, she must undergo assessments conducted by her superiors to ensure she can continue living on Earth. Her affection for Kazuya often causes her to isolate herself from the other girls who are drawn to him.