However, you might be referring to the original 1990s Sailor Moon anime series. While most of the series aired in America, the final arc, Sailor Stars, was not officially released in English in North America. This was due to several factors:
* Licensing Issues: The licensing rights for the series were owned by different companies in different regions. The rights for Sailor Stars were held by a company that wasn't interested in distributing it in North America.
* Low Viewership: The original Sailor Moon series had lost some of its popularity by the time Sailor Stars aired.
* Content Concerns: Some of the content in Sailor Stars, like the introduction of the male Sailor Guardians, was considered too mature for the target audience at the time.
While Sailor Stars wasn't officially released in English in North America, it has since become available through various fan-made translations and unofficial streaming services.
However, it is important to note that watching unofficial releases is not recommended as it can support piracy and violate copyright laws. It's best to wait for official releases or explore legal streaming services for the full Sailor Moon experience.