If you liked the Ah! My Goddess: The Movie anime, the Anime-Planet community thinks you'd like:
The first Christmas of the millennium is approaching and the rumour on the streets has it that if you confess your love on this special day, your wish will come true! And though almost everyone is celebrating the arrival of the momentous event; Mutsumi, Naru, and Keitaro must instead focus on passing their preliminary exams, much to Keitaro's dismay! After hearing the Christmas rumours he just can't sit still and goes out of his way to confess to Naru. Yet nervousness causes him to blurt out the news, causing Naru to run away. With Christmas steadily approaching, Keitaro is now left with the question, "was it just a one-sided love after all?"
Unlike its more ecchi and slapstick harem counterparts, the Love Hina Xmas Special focuses more on feelings and keeps only a fragment of the abundant humor the series had. Likewise the AMG Movie uses the same formula: it is a romance where things are starting to work out (finally), yet due to a huge upset the main character MUST take action this time. Since the flow of the anime and the atmosphere of the story are similar you shouldn't let one of these two go unwatched!
Otaru Mamiya is just an ordinary teenage boy living on Terra 2: a planet inhabited by only men, on which women have been replaced by lifelike yet emotionless robots called 'marionettes.' But his life changes forever when he meets Lime, a spunky marionette with the mind of a child and--amazingly enough--the emotions of one as well! Soon, the demure Cherry and the outgoing Bloodberry join him as well, but he'll need all their help if he is to stop the evil Faust, ruler of Gartland, from taking over their beloved kingdom of Japoness!
In the not-so-distant future, mankind is at war with itself. The lives of Chise and Shuu are torn apart when Chise is chosen to become the ultimate weapon to fight for Japan against their enemies. Death, sadness, and the hardships of love accompany Sai Kano in its grim look at war and its consequences.
AMG Movie and Saikano don't have a lot in common with each other. They both have a romantic side; other then that, absolutely nothing in common. So why did I make this recommendation? The romantic sides are so strong that both will easily draw tears. Even the more resistant people will have to put up a fight to keep composed!