In the future, personal computers have developed into "Persocoms", mobile computers that look like human beings. Hideki Motosuwa, a prep school student, desperately wants to buy a Persocon but cannot afford to. One day he finds a Persocom that has been thrown away and decides to keep it. When he turns on the Persocom, all she can say is "Chii" so he decides to name her that. After a while it starts to become apparent that Chii is more than an average Persocom. Having much better performance, it seems that Chii might be a "Chobit", a type of advanced Persocom rumored to have independent thought. (Source: Anime News Network)
In present times, Gods and Demons coexist together with Humans after the door between each of these worlds had opened. Tsuchimi Rin is a normal young high school student attending Verbena Academy, spending his days living peacefully with his childhood friend Kaede. Unexpectedly, one day the King of Gods, the King of Demons and their families move into be Rin's next door neighbors. Apparently the daughter of the Gods, Sia, and the daughter of the demons, Nerine, are both deeply in love with Rin after having met him the past. Along with his playful friendship with upperclassmen Asa and his encounter with the silent but cute Primula, Rin has much on his hands dealing with the affections of each of these girls. Based on the eroge by Navel.
Kanenone Academy was an all-boys high school isolated from the world by mountains and hills. Yusuke Takasaki, the average 11th grader, led a normal life in the academy until the academy announced attempting for co-ed, and high-school girls were being transferred for the summer semester. (Source: ANN)
Souchirou Nagi and Bob Makihara are two delinquents who arrive at Toudou Academy with the objective of ruling over the school with their strength. But on their first day, they encountered the Jyuukenbu, a martial arts group of the school. Members of the group, Maya Natsume, her sister Aya, and Masataka Takayanagi easily overpowered Souchirou and Bob. And what's more, due to what was assumed to be their "connections" with the Jyuukenbu, the two were attacked by members of the Enforcement Group, which oversees the martial arts groups of the school. Drawn into the personal conflicts between the Jyuukenbu and the Enforcement Group, Souchirou and Bob have no choice but to join up with Maya Natsume's group and to hone their skills to become even stronger. (Source: ANN)
Keitaro Urashima promised a girl when he was young that they would meet up again at Tokyo University in the future. Sadly, in the National Practice Exam, Keitaro ranked 27th from the bottom. Knowing his grandmother owned a hotel, Keitaro intended to stay there while continuing his studies for Tokyo U, only to find out the hotel had long been transformed into an all-girls dormitory. Through an odd twist of fate, Keitaro eventually became the manager of the dorm, beginning his life of living with 5 other girls.
Ranma Saotome and his father, Genma, both practitioners of the Saotome school of anything-goes martial arts, fall into the cursed springs of the legendary training ground of Jusenkyo in mainland China during a training mission. Each spring holds a different curse for any who come in contact with its water, all of which involve who or what has drowned in the spring in the past - Ranma emerges from the spring a girl and Genma a panda, both now cursed to change forms each time they come in contact with hot and cold water. At the end of their training mission, Genma decides to take up residence with his old training partner, Soun Tendo, owner of the Tendo dojo and head of the Tendo school of anything-goes martial arts, dragging a reluctant Ranma along with him. Soun and Genma discuss the arrangements they had made in the past involving Ranma becoming engaged to one of Soun's three daughters in order to combine the two schools and allow Ranma to inherit the Tendo dojo. It's informally decided that he is to be engaged to Akane Tendo, Soun's youngest daughter, and the two must put up with one another - and their engagement - as Ranma and his father settle into domestic life at the Tendo household.
The Diclonius, a mutated homosapien that is said to be selected by God and will eventually become the destruction of mankind, possess two horns on their heads and have a "sixth sense" which gives them telekinetic abilities. Due to this dangerous power, they have been captured and isolated in laboratories by the government. Lucy, a young and psychotic Diclonius, manages to break free of her confines and brutally murders most of the guards in the laboratory where she is being held, only to be shot in the head as she makes her escape. She survives, falling off a cliff into the ocean and manages to drift along to a beach where two teenagers, Kouta and Yuka, discover her. Having lost her memories, she was named after the only thing that she can now say, "Nyuu," and the two allow her to stay at Kouta's home. However, it appears that the psychotic side of Lucy is not dead just yet... (Source: ANN - Revised)
Kintarou Oe doesn't look like it, but he is a genius who completed all his university courses and then quit before graduating. He becomes a wandering student, going from place to place on his bicycle, seeking to learn what he can about life, the world, and women. He is willing and able to do any job he has to prove himself. His travels take him to a variety of locations and a variety of women, each who learns to love the hardworking guy, but not before he can run off. (Source: ANN)
Vesper is a secret agency fighting an army of alien invaders by using super-powerful battle androids. Mahoro is Vesper's most powerful battle android and has won many battles, but she has little operating time left and soon will cease to function. However, if she lays down her arms and conserves her remaining power, the time she has left can be prolonged to just over a year. Mahoro is given an opportunity to live the remaining time she has as a normal human. She chooses to live as a maid for Suguru, a phenomenally messy high school student who lives by himself after his family passed away. (Source: ANN)
High school delinquent Seiji Sawamura is desperate to have a girlfriend, especially after being rejected by 20 girls as of late. He's afraid that he will end his life with his right hand as his only companion. Apparently, that doesn't change when one day when he wakes up and discovers that his right hand has become a girl named Midori Kasugano, who confesses that she has had a crush on him for the last three years. (Source: ANN)