An alien race known as the Oni arrive on Earth to invade the planet. Instead of taking over the planet by force, the Oni give humans a chance to fight for the rights to the planet by taking part in a competition. The computer-selected human player is Ataru Moroboshi, a lecherous, unlucky and stupid high school student from the Japanese city of Tomobiki, and the Oni player is Princess Lum, daughter of the leader of the Invasion force.
A teenage boy has now moved in the home of his mother's friend, because she had died a while back. It just so happens that the Yakuza family has four beautiful daughters, but one daughter, Hibari, who is more beautiful then the rest of the daughters, is actually a boy. Hibari just can't keep his hands off our hero and so their crazy yet happy lives go on.
Kishimoto Kasumi, a 15-year-old girl, was supposed to live at her auntie's house in order to go to high school since April. However, when she moved to the house she was surprised with the fact that there were already four new male students living in the same house. To make the matter worse, that day while she was taking a bath, Takasugi Yusaku, one of those boys, came into the bath and saw her naked. This is how Kasumi's troublesome high school days started.
(Source: AniDB)
Asako Ikeuchi and Natsuko Hayakawa have been close friends for more than 25 years. Natsuko's husband Keisuke had affairs, so she asks Asako to let her stay at her house. Keisuke was once Asako's boyfriend. They will soon be 30 years old. There are other nice guys around Asako. It's a drama about their love and friendship.
Ranma Saotome, a teenage martial artist, and his father Genma travel to the 'cursed training ground' of Jusenkyo in China. There, despite the warnings of the Chinese guard, they fall into the cursed springs. From now on, whenever Ranma is doused in cold water, he turns into a girl and a cute, well-built redhead at that. Hot water changes him back into a man again, but only until the next time. To make matters worse, his father engages him to Akane Tendo, a girl who hates boys.
Yūji Yagami is a high school student with an unusual problem. Yūji has developed a crush ob his mother, Nomi, who is abnormally youthful in both her looks and mannerisms. Nomi however, is oblivious to Yūji's Oedipus complex and unknowingly tempts him with her overly-passionate displays of affections to both her husband and son. The situation is further complicated when Yūji receives a love letter from someone else on Valentine's Day.
When college student Keiichi Morisato dials the wrong number while ordering for some food at his dormitory, he accidentally gets connected to the Goddess Hotline and a beautiful goddess named Belldandy appears out of a mirror in front of him. After getting kicked out of the dorm, Keiichi and Belldandy move to an old shrine and soon afterwards, Belldandy's sisters Urd and Skuld move in.
Virgin 24 year-old Fuguno Masuo is desperately in love with Shiozaki Nagisa, a 22 year-old kindergarten teacher. He is popular among the women, but he truly only has eyes for Nagisa. However, he is a clumsy, thickheaded and gentle man and gets into trouble a lot. He ends up in situations where it is easy for poor Nagisa to misinterpret what really happened.