Kareshi Kanojo no Jijou, or Karekano for short, is a shoujo series created by Tsuda Masami. It ran in the monthly Lala magazine from 1995-2005, with 101 chapters collected in 21 volumes.
In 1998, the series was picked up by GAINAX, and a total of 26 episodes were produced. The anime was left incomplete, and the story goes up to volume 8 of the manga.
In North America, Tokyopop has acquired the manga rights and Right Stuf International has released the anime.