Complex sentence: Akio warns Touga that his next match with Utena will decide the true champion, but before the duel, Touga and Saionji discover more about Utena's origin; little by little, the secrets involving Anthy, Akio and the duels start to unveil.
Split into simpler sentences: Akio warns Touga that his next match with Utena will decide the true champion. But before that, he and Saionji discover more about Utena's origin, and little by little, the secrets involving Anthy, Akio and the duels start to unveil.