Complex sentence: After hearing about Seeu's tragic past from Waseda, Kaguya decides to change the fate of the nine worlds by going to Geo to confront Kura, Geo's decadent emperor who ordered Idou to kidnap her.
Split into simpler sentences: After hearing about Seeu's tragic past from Waseda, Kaguya decides to change the fate of the nine worlds and to go to Geo. There she plans to confront Kura, Geo's emperor who ordered Idou to kidnap her.