Secrets in the MoonlightEP 57

Luna, despite her young age, shows deep understanding and concern for her father, fearing he might sacrifice too much for her surgery. She pleads with him to promise a peaceful life together, reflecting her grandmother's teachings. The episode ends with a poignant moment as Luna expresses her longing for her mother and her father vows to take her to see her grandmother.Will Luna's father keep his promise of a peaceful life, and what secrets will unfold when they visit her grandmother?