His and Her Circumstances [Anime Series] on AllMovie

Yukino Miyazawa is a perfectionist. She strives at every moment to be the most beautiful, most popular, most scholarly girl in her high school and she succeeds at it. That is, until Souichirou Arima comes along. Souichirou is Yukino's rival in every way; he's handsome, charming, gets excellent grades, and even challenges Yukino for the positions in school leadership that she has always won. Yukino is determined to destroy Souichirou, and it seems like she'll be able to do it easily. That is, until he declares his love for her. Many more misunderstandings and opportunities for laugher follow, including the secret, not-so-glamorous life that Yukino leads at home, and the secrets that Souichirou just might be keeping as well.