The series tells the story of Keitarō Urashima and his attempts to find the girl with whom he made a childhood promise to enter Tokyo University.
The manga was licensed for an English-language release in North America and the United Kingdom by Tokyopop, in Australia by Madman Entertainment, and in Singapore by Chuang Yi.
A twenty-four episode anime adaptation of the manga series, produced by Xebec, aired in Japan from April 19, 2000, to September 27, 2000.
The English release of the manga has been reprinted many times.
While on their trip they settle their differences and meet Mutsumi Otohime, who lives in Okinawa and is also studying for the Tokyo University exams.
After returning from Kyoto, Keitarō and Naru decide to retake the exams.
The anime series, special, and OVA were licensed for release in North America by Bandai Entertainment.
In July 2007, the license was acquired by Funimation, who released a boxset of the television series in February 2009.