This question is difficult to answer, because for an Olympic fan, no matter which episode, Aesop Altman is very good. Although each episode or two is an independent plot, it is not recommended to skip it. It can be divided into several key plots (which I prefer), such as:

Aesop Altman's scarier content: 17 episode (banshee of firefly plain) 24 episode (midnight change) 48 episode? (Revenge of Bellow Cohen)

Altman's Routine 2 Series (Beaten+Rise): 13 Episode 14 (Ace Black Boy, Yapool) 26 Episodes 27 Episodes (starring Heber Park Yung-soo).

Nancy's Return to the Moon: 28 episodes (Beidou is the only one that has changed since then)

Nancy's heroine (Mitsuko Hoshi) changed her lines: 9 episodes (there are no details about the struggle between writing and the stars in the script at the end) 14 episodes (at the end of Beidou: once a year, the cowherd and the weaver girl meet in the Milky Way, and Minami Yuko: the cowherd and the weaver girl meet. Are they lovers? Beidou: Well, Minami Yuko: Then what is the relationship between us (that is, this sentence))

Nancy's original actor: 7 episodes (It is said that Maya's actress originally played Nancy's role, but later she could not shoot because of the actor's injury, so she was temporarily changed to Mitsuko Hoshi).

Famous sentence: The last episode (enthusiasm can't die out, help each other and sympathize with the weak, no matter what nationality, you can become friends, don't give up that feeling, even if you have been betrayed thousands of times)