"Sailor Moon doesn't matter right now," she says. "I am just Usagi. And you are just a little girl who is scared."

By Episode 40, the Black Moon arc has carefully constructed a fragile new status quo. Chibiusa, a mysterious pink-haired girl from the future, has been revealed as the daughter of Neo-Queen Serenity and King Endymion—meaning she is Usagi’s future child. However, Usagi does not know this yet. The tension arises from Usagi’s growing, inexplicable attachment to the bratty, secretive child. The episode immediately capitalizes on this by having Chibiusa vanish into the Lake of Disappearance—a dimension that erases existence itself.