High school science-whiz Makoto Mizuhara is working on his newest project in preparation for the school festival, alongside his best friend Nanami Jinnai. Nanami's brother and Makoto's lifelong rival, the unscrupulous student council president Katsuhiko Jinnai, is under scrutiny for mishandling the school festival planning and is convinced that Makoto is plotting to steal his position. One night, as Makoto and Nanami are taking a break with their teacher Masamichi Fujisawa, Jinnai sneaks into the science lab and sabotages Makoto's device, which suddenly opens a portal that flings all four of them into another world! Upon arrival, Makoto is immediately attacked by a horde of giant bug monsters. While running from them, he comes across Fujisawa and a girl named Rune Venus. After Fujisawa fights off the monsters, a group of dignitaries arrives, looking for Rune, their princess. They inform Makoto and Fujisawa that they are in a world called El-Hazard and take them back to the palace of Roshtaria, their kingdom. Though her advisors are suspicious of the newcomers, Rune decrees that they are to be treated as guests and quickly befriends Makoto. Unaware that Nanami and Jinnai are in this world as well, Makoto gets to work trying to figure out a way back to Earth.

Rai is a space opera that fuses feudal Chinese and Japanese customs with vast galaxy spanning empires and space-going societies. The story follows the life and times of the samurai Rai, and the quest of several spacefaring factions for control of territory and, of course, the Empire.

It all starts when Gokudou steals a pouch from a fortuneteller, thinking that it contains a gem. Instead, it turns out to be a rock, from which emerges Djinn. The genie grants Gokudou the standard three wishes, but our anti-hero doesn't think heavily about his wishes. Gokudou does get his wishes, though not exactly in the fashion that he expected. The best thing he gets out of his wishes is Honou no Maken, a magical sword that enables its owner to do fire attacks and it can be summoned from anywhere in the world. Even with an enchanted sword, Gokudou doesn't get much respect. He gets turned into a woman by Djinn, who is also a shapeshifter. He is followed by Rubette La Late, a potential love interest who is more interested in adventure, karaoke and outperforming Gokudou. He gets whapped on the head a lot, especially by the fortuneteller who reappears throughout the series just to plague Gokudou it seems. Later in the series, he gets another sidekick, a former evil magician named Prince, who is more handsome and a better womanizer than Gokudou. (Source: AnimeNfo)

Yukino Miyazawa is the female representative for her class and the most popular girl among the freshmen at her high school. Good at both academics and sports on top of being elegant and sociable, she has been an object of admiration all her life. However, in reality, she is an incredibly vain person who toils relentlessly to maintain her good grades, athleticism, and graceful appearance. She wants nothing more than to be the center of attention and praise—which is why she cannot stand Souichirou Arima, the male representative for her class and the only person more perfect than her. Since the first day of high school, she has struggled to steal the spotlight from her new rival but to no avail. At last, on the midterm exams, Yukino gets the top score and beats Souichirou. But, to her surprise, he congratulates her on her achievement, leading her to question her deceptive lifestyle. When Souichirou confesses his love to Yukino, she turns him down and gloats about it at home with only a hint of regret. But the very next day, Souichirou visits Yukino house to bring her a CD and sees her uninhibited self in action; now equipped with the truth, he blackmails her into completing his student council duties. Coerced into spending time with Souichirou, Yukino learns that she is not the only one hiding secrets.