Nadia: The Secret of Blue Water/Heartwarming


 * The 16th episode: "The Mystery of the Lost Continent" has possibly the most heartwarming scene in the entire series:
 * The revealation that, saddens Jean, leaving him feeling that all his efforts were for nothing. So he tells Nadia he no longer sees any point in inventing and has decided to give it up; which saddens her because she knows how much it means to him. So she cleverly reminds him of the promise he made to her  , in her best Jean impression. It works.
 * The scene itself, and the accompaniment of 'To Home', makes it so poignant, that you might find yourself getting a little misty.