Utena rejects this, so Akio reveals the truth.
They're in the planetarium. All the fantasy visions? Illusions, projected by the planetarium.
Anthy will stay the Rose Bride because at this point, she likes it. And she is a witch.
No, Utena says, now we will duel.
Oh, and the YouTube upload is legitimate and from the real licensor.
https://www.youtube.com/playlist?list=PLrrh84y760v-hDEulas0Tp_wiQy0FcjLl