Sailor Moon Eternal: Nehelenia

This is where Nehelenia meets Queen Serenity of the White Moon uninvited on the day where Princess Serenity was born and claimed herself as the new Queen of the Moon Kingdom, which Serenity refused to believe since her nightmares would bring terror to the land and beyond. Serenity told Nehelenia that if she came in peace and not cause trouble, she will be fine but refuse to let her spread evil everywhere. Long story short: Nehelenia declared light and darkness are one of the same, as in one side cannot exist without the other, Serenity refused to listen and forced to seal her away inside of the mirror she came out from and Nehelenia cursed the White Moon to fall into ruin before the newborn princess can take over the throne.