Cleavage(クレイヴィジKureiviji) is a bishōjo game for Microsoft Windows created by Sei Shoujo and released by Empress in February 2005. It inspired a two-episode original video animation (OVA) erotic series directed by Takashi Kondou and produced by Atlas21 under its Media Bank label. It was released in Japan in 2006 and in the USA three years later, on January 20, 2009, by Kitty Media.