Because of her exotic beauty, Lum has become extremely popular with the boys at Tomobiki High School. Despite this, she refutes all of their advances since she is devoted to Ataru. Lum is very intelligent, but naive about earth, with a worldview comparable to that of a kindergartener. She does not understand why the other boys at school feel that the philandering Ataru is not good enough for her. For the most part, however, people who look at her for the first time view her as highly attractive.