His and Her Circumstances (1998)

Yukino Miyazawa is really, really vain, and loves to hear people praise her. She's always been the best at everything, and always tries to look perfect. But when Yukino goes to high school, she's finally upstaged--by Souichiro Arima, who scores better on the entrance exams and instantly snatches the attention of the class. By accident, Arima finds out that Yukino is just pretending, and this starts off a series of events that lead to Yukino and Arima falling in love. They then have to cope with a lotof obstacles in their relationship.Yukino Miyazawa, the Queen of Vanity, is the 'perfect student' - smart, pretty, athletic and has an overall nice personality. What everyone in her school didn't know was that behind the perfect facade lies a different person. She is always the best in anything - but an obstacle comes her way. The obstacle's name is Souichirou Arima. Souichirou Arima is chosen as the representative of the freshmen, not Miyazawa. Thus, she strives hard to defeat him in all aspects. But a day comes when her most-hated enemy comes to find out her secret. From treating Arima as an enemy, friendship blossoms. Soon love comes. Kare Kano is a story that revolves all around the pangs and beauty of first love.