Ayato Kamina may seem like an average boy in a devastated world, but after being captured by TERRA, a military organization set on saving the world from the Mu, an alien race set on "tuning" the world, he realizes he is an instrument in deciding the fate of humanity and piloting RahXephon. Not only is Ayato the only person who can control the mecha, but he also has a terrible fate of his own. Holding onto memories of his old life and grasping to keep his own humanity, he must struggle in this new world and realize his true potential with RahXephon.
The year is 1969, and strange things are happening on Earth: a strange formation known as Brigadoon has appeared in the sky, and mysterious alien machines have begun to attack a seemingly ordinary orphan girl named Marin! Luckily for her, Marin finds an artifact which summons the alien Melan Blue to protect her – but there is more going on between Earth and Brigadoon than meets the eye. However there is more going on behind the scenes between Earth and Brigadoon. Along with a cast of quirky characters, Marin must get to the bottom of what’s going on, lest both Earth AND Brigadoon be destroyed forever!
Both series are about humanity dealing with a mysterious threat that suddenly came from unkown origins. There's plenty of mystery and weird enemy designs to be had, and their moods are rather similar. Brigadoon is more of a story about friendship while RahXephon goes out of its way to be as mysterious as possible.
Still, if you liked one the other might interest you.
A devastating earthquake strikes Tokyo, leaving the city in ruins. Man's only hope is to use boomers, an artificial humanoid form. Everything seems perfect until some of the boomers go crazy and start killing people. The only hope of stopping them is the Knight Sabers, a group of 4 female heroes in form-fitting power suits, with which they can perform amazing feats of strength and agility.
Just one reason: more Konaka goodness°°°/!
A tad more seriously and thoroughly: if you enjoyed this show, it is quite likely that you were enthralled by its intriguing, deep and stimulating script, so give this other show a try, as we are talking about the same scripter here!
Can the same scripter be a sufficient element to favour any show?
Imho, yes. At least if it's about some big shot like Konaka or few others that we are talking about.
Such a capable artist doesn't limit his part to providing a top-notch script: his genius pervades the whole work and other elements like the soundtrack, the fluidity of animation and even the directing become merely instrumental in conveying deeper meanings.
Tomoya Okazaki is a third-year high school student who is generally bored with life and doesn't take his studies, future, or anything else seriously. One day, however, he meets a lonely-looking girl in the school courtyard, Nagisa Furukawa. She explains to him the source of her loneliness: she had missed a lot of the previous school year and thus is repeating her third year; everybody that she knew has already graduated, and she is lonely. Tomoya is rather indifferent at first, but decides that he has nothing better to do and spends increasingly more time helping Nagisa restore the school drama club. As his relationship with Nagisa grows, Tomoya begins to open up to various other people around the school as well...
This is more of an absract recommendation. If you liked/disliked the meccha/action part of Rahxephon or the absence of it in clannad then it may not be for you.
This is for the music. Both have a certain emphasis on music (moreso in Rahxephon) and the creators put in alot of effort to make amazing soundtracks.
Also, the major characters love stories are both...special. Without spoilers, I can't really explain why, but the main characters love plots are just...touching.
A four-leaf clover is said to be a being that cannot belong to anyone; and if she learns to love someone, the world is in the palm of her love's hands. One such clover longs to leave her lonely captivity; and she has met a man, Kazuhiko, who she hopes can finally take her from this place. What lies in store for the clover and her love?
Hitomi was just a normal high school girl, until she was taken by the mysterious Van Fanel and dropped into a world of romance, magic and giant sword-wielding armor suits! Now Van, pilot of the famed armor suit Escaflowne; and Hitomi, whose hobby of predicting the future just became a frightening reality, must work together and fight the advanced technology of Zaibach: a force who want to shape Gaea to their visions of "peace". Follow Hitomi in her struggles against both these forces who seek to conquer this world, and her own confused heart.
Like RahXephon, Escaflowne is another series that deals with the fate of humanity, and a hero must try to save the world by piloting a huge medieval robot called a Guymelf. The animation is very similar to Escaflowne and the story is epic as well.
If you like Negima, You'll Like Love Hina because both have a guy surrounded by girls over the protagonist of Love Hina (Naru Narusegawa) as being Asuna
Negima is Love Hina kicked up a notch. The stories are quite different, Love Hina being about getting into college and Negima being about a 10-year old mage becoming the teacher (not magical, just regular teacher) of a bunch of middle schoolers. But the important thing with Ken Akamatsu's works are the girls, and Negima has about 10x as many. The "main" girls in each are also quite similar in temperament.
The two are almost the same with Negima being more action-packed and Love Hina being a more indepth story.
Both done by Ken Amatatsu, Both Harem mangas, Love hina is more of a comedy where Negima! is a fantasy and action manga.