Complex sentence: Age is scolded and reprimanded, while Izamura takes Patema to his giant governing tower, threatening to release her into the sky, and shows her that he had previously captured another Invert, Lagos, who has long since died.
Split into simpler sentences: Age is scolded and reprimanded, while Izamura takes Patema to his giant governing tower. He then threatens to release her into the sky, while shows her that he had previously captured another Invert, Lagos, who has long since died.