sailormooncosmos

Starlights arc of Sailor Stars rewritten 173 Leaving for New York City to study abroad in America, Mamoru gives Usagi an engagement ring. Chibiusa and Diana return to the future. While Mamoru is about to leave, three new popular idols named the Three Lights appear. A new enemy, going by Sailor...

Streamable I think it is close to the supposed opening of 90s Stars had things gone differently. It is meant to replicate a possible final battle opening of Sailor Stars if they had the Senshi upgraded to Eternal form immediately prior to the final battle with Galaxia.