Kare Kano: His and Her Circumstances

Yukino Miyazawa has it all - perfect grades, looks, the admiration of her peers. She's the #1 student at her school... at least she was until he showed up. The new boy, Soichiro Arima, one-ups her in every department. And the worst thing about it is that he's sincere! With her ego in jeopardy, Yukino will do whatever it takes to regain the spotlight, but falling in love was never part of it.

(Source: Tokyopop)

Included one-shots:
Volume 1: Tora to Chameleon: Yakusoku wa Isshuukan (The Tiger and the Chameleon: A Promise for One Week)
Volume 4: Ashita Mata Mori de Aou ne (Meet Me Again Tomorrow in the Forest)
Volume 8: Abareru Ousama (The Raging King)

Note: Includes 4 extra chapters from volumes 2, 10, 11, and 12.