If you liked the Fate/stay night anime, the Anime-Planet community thinks you'd like:
Morimiya Yorito is a normal student who has an abnormal obsession for the sky. One day, he meets a strange girl named Shihou Matsuri who shares his interest, but as fate may have it, she isn't a human; Matsuri is a Yaka -- a "woe of the night" -- who is immortal and cannot stand the sunlight. A strange man is chasing Matsuri, to use her powers, so Yorito decides to help her hide. What are the strange man's plans, and what secrets does Yorito's sister hide?
Sola and Fate/stay night are both shows in which a supernatural humanlike "creature" eventually becomes a very important person / love interest of the main character. While sola is more of a romance/action and FSN more a romance/action show, they contain very similar elements from both genres and go over emotions of hatred, love and uncertainty. If you just finished one of these, and are looking for something slightly different, but with the same themes and plot elements, look no further!
Long ago there was a battle between angels and humans, which ultimately ended with the angels’ retreat. Twelve thousand years later, the angels have become active again and have begun harvesting humans for nefarious purposes; and only the pilots of the ancient mecha known as Aquarion are able to oppose the angels' tools of war. The pilots have special powers, but the secret to defeating the Angels once and for all lies with the reincarnations of the two beings who defended humanity against the Angels in the past: Apollonius, an Angel who turned his back on his kind in order to protect humanity; and Siren, his human lover. Only Apollonius can awaken the true strength within Aquarion that is needed to defeat the angels; but who is the reincarnation of Apollonius?
well fate stay night is more magic and aquarion is more angels and mecha they both have fighting in them and hint at romance. the two main male charictors both have the same fel to them and do things their way. if you liked one you'll defenetly like the other.
Tenchi Universe is a twisted continuation of the original Tenchi series. Through a different set of circumstances, Tenchi Masaki meets up with characters such as Space Pirates and Galactic Princesses. Tenchi is then taken on an emotional roller coaster ride, as well as a space epic, as he discovers new things about his new friends, himself, and his destiny.
If you enjoyed watching Fate/Stay Night for the dub's sometimes hilariously poorly-written dialog, I recommend you watch Tenchi Universe. Tenchi Universe has the same "quality" of dialog with far greater frequency.
All Morioka Kohei wants to be a regular photographer, but all he ever seems to capture on film is ghosts! With 70 percent of his photos inhabited by the undead, Kohei has managed to gain not only a reputation, but also a job at an occult magazine. Things couldn't be more "normal" until he is sent to a obscure castle where he photographs a mysterious girl with a knack at disappearing, thus piquing his interest to return. And thus, Kohei sets out on a journey that takes him into the heart of the occult, on a mission to help the cutest vampire in existence find her long lost mother!
Fate/stay Night and Tsukuyomi Moon Phase are both stories about a strong female, and the male that tries to support her, despite his incapability to do so. Feelings of love and despair develop throughout their battles.
Abandoned outside an orphanage when he was just a baby, Yuki is a boy with no idea where he came from or who he really is. Now in high school, the teen is plagued by odd dreams, death threats and an ability to see the negativity that dwells within people's hearts. One night after being lured into a trap, a mysterious and handsome man named Zess saves Yuki from being killed before disappearing into the night. Then, with the sudden arrival of his long-lost brother, the orphan finds himself pulled into a new world where he can not only learn about his powers and how to control them, but also becomes aware of the evils that lurk in the darkness. Can Yuki finally find the place he truly belongs, and just why is Zess so protective over the young boy?
Reincarnations, eternal battles that defy time, inseperable partners, normal people with magical powers, a touch of romance and dark undertones, these shows are a perfect pair. If you liked one, you will like the other.