LOONA TV #259 is the two-hundred-fifty-ninth episode of LOONA TV.
Chuu films some solo scenes for the "Heart Attack" music video, including some not included in the final video. Yves observes from the sidelines and says that she only slept one hour last night. Yves brings Chuu a baked sweet potato and feeds her by hand while the staff fix Chuu's hair and makeup. Chuu says she is incredibly touched, and that the sweet potato tastes like gold. Yves and Chuu then imitate a famous sketch surrounding the word "pumpkin sweet potato" (호박고구마).