LOONA TV #258 is the two-hundred-fifty-eighth episode of LOONA TV.
HaSeul and Kim Lip watch while Yves and Chuu are shooting for the "Heart Attack" music video. They explain that Yves's book prop is written in English and that she probably can't read it. HaSeul and Kim Lip meet a cat on set, which the subtitles claim is HyunJin. HaSeul and Kim Lip then find the "ballet practice room" portion of the set and pretend to do ballet "like Yves." They move on to make shadow puppets on the wall and copy the "Heart Attack" "X" move again.
- The cat in this episode reappears in LOONA TV #277 and is named "Tori".