of the original 1990s series (part of the first season) is titled The Legendary Lake Yokai: The Bond of Usagi's Family

series, here are the topics that your query could be referring to: Sailor Moon R (Season 2), Episode 40 (JP Episode 86) : This episode, titled " Saphir Dies: Wiseman's Trap

: It provides a rare, sympathetic look at Saphir (Sapphire). Unlike many villains who are simply defeated, Saphir attempts to do the right thing after discovering Wiseman’s true, genocidal intentions for the future of Earth and Nemesis.

To understand why Episode 40 is the best, we must look at the arc. Sailor Moon R ’s second half (the "Black Moon Clan" arc) is heavy. The plot involves time travel, a corrupted future, and the parasitic entity known as Death Phantom. By Episode 40, Chibiusa has been revealed as the future daughter of Usagi and Mamoru. The enemy, the sinister Wiseman, has manipulated Chibiusa into believing her mother (Neo-Queen Serenity) hates her.