In the second arc/season of Sailor Moon, we are given a glimpse into the utopian future known as Crystal Tokyo, ruled by the future forms of Usagi and Mamoru, Neo-Queen Serenity and King Endymion respectively. This answered the question of what happens to our beloved Senshi after the series, but also left questions. The biggest question fans have regarding Crystal Tokyo is the timeline in between the 21st and 30th Century. The answer is different in both the anime and the manga, so I’m going to gather the evidence separately.
In Act 19 of the manga, King Endymion tells us this very valuable information. Here are two different translations, from the original and the reprint.
Reprint (Courtesy of Miss Dream)
Neo-Queen Serenity ascended to the throne in the 21st Century at age 22, and gave birth to Chibiusa that same year. After these events, Usagi/Serenity ceased to age and the era of Crystal Tokyo began. This means that Crystal Tokyo has existed since the 21st Century, making Usagi, Mamoru, and the city as a whole at least 9 centuries old.
Chibiusa’s age supports this:
In the very last act of Sailor Moon, after the Galaxy has been saved and Usagi reunited with her loved ones, we see this:
This implies that Crystal Tokyo is being built at that moment.
We then jump to the much-anticipated wedding of Usagi and Mamoru, complete with the 8 Senshi as bridesmaids. Usagi then says something very important;
Usagi is saying that she is pregnant with Chibiusa. Remember, Usagi ascended to the throne and gave birth to Chibiusa at age 22. Despite the jump to the wedding, and how it seems it happened right away, at the very least the wedding occurred at least four years after the events of Stars. Usagi is 16/17 when she saves the galaxy. At the very least, she’s 21 when she gets married because it would have taken 9 months for Chibiusa to be born, by which point Usagi would have already turned 22.
That’s just what I believe happened, based on the events of the manga. The anime version is next!