DearS (ディアーズ, Diāzu?) is a Japanese romance comedy manga by mangaka duo Peach-Pit, serialised in the monthly shōnen manga magazine Dengeki Comic Gao!. The manga was adapted into a 12 episode TV anime series which aired from 10 July 2004—26 September 2004. The DVD release includes an additional episode labeled "9.5" (occurring between episodes 9 and 10) for a total of 13.

Source: Wikipedia