School Days(スクールデイズSukūru Deizu) is a Japanese adult visual novel developed by 0verflow and published by Stack, and was originally released for the PC on April 28, 2005. It was subsequently released as a DVD TV game by Stack, followed by an all-ages port titled School Days L×H published by Interchannel for the PlayStation 2, in both limited and regular editions, on January 17, 2008. It was later re-released as School Days HQ on October 8, 2010, with improved graphics, additional story and new endings. School Days has since then received two spin-off titles, Summer Days and Cross Days, and has made several transitions to other media, including a twelve-episode television and two OVA anime by TNK, a two-volume manga by Homare Sakazuki, six novels and a radio drama series.