Code Geass: Lelouch of the Rebellion

On August 10, 2010, a.t.b., the Holy Empire of Britannia overpowered Japanese forces and conquered the country with their new robotic weapons, the Knightmare Frames, in less than a month. In the aftermath of Britannia's invasion, Japan lost its freedom, its rights, and even its name, becoming Area 11 of the Britannian Empire. The Japanese people, renamed as "Elevens", are forced to survive in poor neighborhoods, while Britannians live in first-class settlements. Rebel elements persist, however, as pockets of Japanese organizations struggle against the Empire for the independence of Japan.
After his father, the Emperor of Britannia, failed to prevent the assassination of his mother, an attack which also left his sister blind and crippled, the young prince Lelouch vowed to destroy Britannia. Seven years later, he accidentally becomes mixed up with "terrorists" in Area 11 and encounters a mysterious girl named C.C., who gives him the power of Geass. With it, he finally has the power that he needs to defeat Britannia and fulfill his two wishes: to seek revenge for his mother and to construct a world in which his beloved sister Nunnally can live happily.

Genre: Drama, Mecha, Alternate history

Claymore

In a world where humans coexist with creatures called Yoma (妖魔, Yoma?) sentient monsters that feed on human organs, a nameless and highly secretive organization has created an order of superhuman warriors called Claymores to protect humans from the Yoma, for a large fee. One Claymore warrior, Clare, struggles to hold on to her humanity while she fights the Yoma. As a child, Clare was adopted by the Claymore Teresa. Teresa rebels against the organization and is subsequently killed, so Clare volunteers to become a Claymore using Teresa's flesh to take revenge on the Awakened Being, an exceptionally powerful form of Yoma, who killed her. With determination and her human friend Raki by her side, Clare overcomes her low demonic power by honing the skills she inherited from Teresa, and other Claymores. As the series progresses, she becomes stronger and a better fighter, gradually earning the respect of strong allies and coming in conflict with the shadowy organization, the top Claymores who support them, and many powerful Awakened Beings.
In the twelfth volume of the series, the story jumps seven years. The claymores now are fully battling the awakened beings. Clare and Raki, having been separated during the gap, are searching for one another.

Genre: Fantasy, Supernatural, Action

Chrono Crusade

Chrono Crusade is set in the height of the Roaring Twenties, where jazz is king, bootleg liquor flows freely, and the mob rules the streets. It is a time of prosperity, luxury and decadence, and the division between rich and poor grows even wider in the wake of the First World War. It is at such times of great change and upheaval that the dark things that lurk below the world of man can come to the surface. In the world of Chrono Crusade, a fictional organization known as the Order of Magdalene (or more specifically, the characters of Sister Rosette Christopher and her soul-bound demon partner, Chrono) exists to fight the demonic threats that appear with increasing regularity across America. Both Rosette and Chrono are revealed during the course of the story to be driven by a shadowy past, centered around a search for Rosette's lost brother, Joshua. Joshua is shown to have been taken from her by the sinner, Aion, a devil who shares a dark and bloody history with Chrono, and seeks nothing less than to overthrow Heaven and Earth.

Genre: Action, Adventure, Drama, Romance

Chobits

The story centers on the life of Hideki Motosuwa, a repeat student attempting to qualify for university by studying at Seki prep school in Tokyo. Besides a girlfriend, he dreams of having a persocom an android used as a personal computer, which is expensive. On his way home one evening, he stumbles across a persocom in the form of a beautiful girl with long hair lying against a pile of trash bags, and he carries her home. Upon turning her on, she instantly regards Hideki with adoration. The only word the persocom seems capable of saying is "chi" (ちぃ, Chii?), thus he names her Chi. Hideki assumes that there must be something wrong with her, and so the following morning Hideki's neighbor Hiromu Shinbo tries to analyze her with his mobile persocom Plum, and after Plum crashes concludes that she must be custom-made.
Shinbo introduces Hideki to Minoru Kokubunji, a twelve year old genius who specializes in the field of custom made persocoms. Minoru's persocoms, including Yuzuki, a fairly exceptional custom made persocom, are not able to analyze Chi either, and thus they conclude that she may be one of the Chobits, a legendary series of persocoms rumoured to have free will and emotions. Although this could be a possibility, Minoru is confident that it is only a rumour. Yuzuki also adds that she does not resemble any persocom model in any available database and so she must be custom made after all.
A major part of the plot involves Hideki attempting to teach Chi words, concepts, and appropriate behaviours, in between his crammed schedule of school and work. At the same time, Chi seems to be developing feelings for Hideki, at an emotional depth, which she is not supposed to possess, and Hideki struggles with his feelings for her. The need to figure out more about Chi and her mysterious functions and past becomes a stressing pull for the characters in the series.
Hideki discovers that his feelings intesify for Chi whether she is a persocom or not, despite other horrible experiences involving persocoms that happened to his friends. Chi becomes aware of her purpose through a picture book series called A City with No People which she finds in a bookstore. The books speak about many different things involving human and persocom relationships: persocoms and their convenience towards people as friends and lovers, how there are things that they cannot do and questioning whether a relationship between a persocom and a human is really one sided. It also speaks about the Chobits series; that they are different from other persocoms, and what they are not capable of doing unlike other persocoms. These picture books awaken Chi's other self, her sibling Freya who is aware of their past and helps Chi realize what she must do when she decides who her "person just for me" is. Together, Chi and Hideki explore the relationship between humans and their new technological advantage, the persocom, as well as their friends' and their own.

Genre: Romantic comedy, Science fiction

Cat Returns, The

The story follows a girl called Haru, a quiet, shy, and unassuming high school student who has a long-suppressed ability to talk to cats. One day she saves a darkly colored, odd-eyed cat from being hit by a truck on a busy road. The cat turns out to be Lune, Prince of the Cat Kingdom. In return, the cats shower her with gifts of catnip and mice - and then she is offered the Prince's hand in marriage. Her mixed reply is taken as a yes.
Immersed in desperation over this unwanted development, Haru hears a kind female voice which tells her to seek out the Cat Bureau. Haru meets Muta, a large white cat the voice told her to seek for directions, who leads her there to meet the Baron, who happens to be a cat figurine given life by the hard work of his artist, and Toto, a stone raven who comes to life much like the Baron. Soon after meeting them, Haru and Muta are taken to the Cat Kingdom by force, leaving Toto and the Baron in the human world only to be followed by them. The Baron and his feathered friend finally find the entrance to the Cat Kingdom on Earth - five lakes forming a cat's paw.
Haru is conducted to a feast at the castle of the Cat Kingdom and she begins to slowly turn into a cat - with tan paws, ears, and whiskers, though still mainly human - so that she will make a suitable bride for the Prince. At the feast, the Baron (in disguise) dances with Haru as part of the entertainment, before being discovered and fighting off the guards so that he may rescue her.During this dance it becomes clear that Haru has feelings for Baron. They are helped by Yuki, a white female cat who works as a servant in the palace and who had tried to warn Haru to leave the Cat Kingdom before she was taken to the castle. Yuki shows them an escape leading to a tunnel.
Haru, the Baron, and Muta's escape leads them through a maze to a tower, which contains a portal back into Haru's world. The King goes through a series of efforts to keep them in the Cat Kingdom long enough for Haru to remain trapped in the form of a cat so that he can still have her as his daughter-in-law, going so far as to actually blow up the tower.
Lune and his guards return to the Cat Kingdom to reveal that the King was not acting on his behalf and he has no desire to marry Haru; he has instead planned on proposing to Yuki. Also, Muta is revealed to be a notorious criminal in the Kingdom (having devoured a whole lake of fish in one session) yet still siding with Haru over his terrible deed then, and Yuki as being the strange voice who'd advised Haru to go to the Cat Bureau. In her childhood Haru had saved Yuki from starvation by giving her the fish cookies she was eating, and Yuki has now repaid her kindness.
Eventually Haru, Muta and the Baron escape the Cat Realm, with the aid of Prince Lune and Toto, and Haru discovers her true self and tells the Baron how she feels about him. He tells her he admires her sincerity but it is left unclear whether he returns her affections. Haru leaves the cat kingdom and upon learning that her former flame has broken up with his girlfriend, simply replies, "It doesn't matter anymore."

Genre: Fantasy

Cardcaptor Sakura

The series begins as a simple girls' comic of the magical girl genre. Ten-year-old fourth grader Sakura Kinomoto opens a mysterious book in her father's study and accidentally lets loose the magical Clow Cards. By her ability to open the seal, Sakura is revealed to have special powers, and it becomes her responsibility to retrieve the missing cards.
The task involves finding each card, battling its magical personification, and sealing it away. She is assisted by Cerberus (Keroberos, also known as Kero-chan), the Beast of the Seal assigned to protect the cards, who was asleep when Sakura opened the Clow Book (He was on a "nap" at the time, which lasted some 30 years). Kero, who looks like an animated plush toy throughout most of the series (his "borrowed" form), guides Sakura as she develops her Cardcaptor powers. In the first episode, he presents her with the Key of the Seal, which allows her to fight and capture the Clow Cards.

Genre: Magical Girl, Romantic, Comedy, Action

Bokura Ga Ita

Nanami Takahashi, a 15 year old high school student, falls in love with and begins dating the most popular guy in school, Motoharu Yano. However, their relationship is not easily maintainable. Yano's past, as well as the complex emotions they bring up, make it difficult to be completely honest about how he feels. To add more troubles to their relationship, caught in the middle are Yuri Yamamoto, the younger sister of Yano's now dead ex-girlfriend, and Masafumi Takeuchi, Yano's best friend. Yuri's past with Yano goes deeper than one might suspect and her feelings run deeper than she portrays in public. Takeuchi cherishes Yano's friendship, but at the same time, he may lose it for someone dear to him, Nana. The story revolves around how Takahashi must search deep inside herself and find her true feelings for Yano whilst being able to trust and accept Yano's feelings for her as well, deciding if Yano is indeed the one for her or if someone else can provide better solace.

Genre: Drama, Romance, Comedy