Shoujo Kakumei Utena: After The Revolution

Utena has saved Anthy by defeating Akio in the final duel, but in doing so she has vanished from the world. Now the student council members at Ohtori Academy find themselves in their own revolutions.
(Source: Viz Media)
Contains three separate stories about the former members of the student council, 20 years in the future: After the Revolution, Beautiful Thorns, and The Eve of the Revolution.