‘Nadia: The Secret Of Blue Water’ Blu-Ray Review: An Anime Classic That Laid The Foundations For ‘Evangelion’ At the start of the 90s, 'Nadia: The Secret of Blue Water' was aired on Japanese television. It went on to be a huge hit and a defining work for Gainax. So this new Blu-ray release of one of the most iconic anime series ever created has a lot to live up to.