After Luna and Akiro's discussion yesterday, all things were set, and she's about to join him in his wish-granting program on this day. She did not know the particular name of his job but that's what she calls it. Since she would be working with him, Luna woke up as early as she could before her master impatiently knocks on her door as he said that they would be early.
"I'll wear clothes as simple as I can," Luna thought.
She'd do anything to avoid being noticed by Illinois too much as she was certain that Akiro would have a hard time communicating with him with Luna on her side. Looking as plain as possible would lessen his focus on her, not due to some unknown feelings, but because of hatred after losing the competition.