the development of School Days, 0verflow developed the Radish Vacation visual novel series. The first is Snow Radish Vacation released on December 28, 2001, followed by Summer Radish Vacation on April 1, 2003, and finally Summer Radish Vacation 2 on August 13, 2004. A prequel titled Summer Days, was released on June 23, 2006, retelling the original game during summer vacation and from the perspective of Setsuna Kiyoura. Unlike its predecessor, however, Summer Days was almost universally panned for its heavily bugged state, loads of patches, and recall. Another spin-off titled Cross Days was released on March 19, 2010. Set in the same continuity as School Days, Cross Days follows the life of another protagonist, Yuuki Ashikaga, a high school freshman who also finds himself caught between the affection of two girls, Roka Kitsuregawa and Kotonoha Katsura, during his second term at Sakakino Academy. The game also features yaoi scenarios, during which Yuuki cross-dresses as a maid. 0verflow released Shiny Days on February 2, 2012, which is a remastered version of Summer Days with a new heroine and higher quality animations. A spin-off, Island Days, was developed for the Nintendo 3DS and was released in Japan on July 3, 2014. The game, developed by Klon, focuses on Makoto and the girls becoming trapped on a remote island and includes tower defense elements. Manga Based on the story of the original game, School Days was reimagined as a manga, illustrated by Homare Sakazuki and serialized in the Kadokawa Shoten magazine Comp Ace from May 26, 2006 to September 26, 2007. On July 12, 2007, 0verflow announced that the manga had been collected into its first volume, comprising five chapters set to be released on July 24. Later that year, the second and final volume, comprising the remaining seven chapters, was released on November 21. Various artists also produced short manga of School Days that were compiled into two comic anthologies. The "School Days Comic Anthology" was released by Ohzora Publishing on October 25, 2005, under their P-mate Comics imprint, containing nine short manga by individual artists. On February 25, 2008, Ichijinsha printed the "School Days Kotonoha Anthology" under their DNA Media Comics imprint, a collection of manga primarily featuring the character Kotonoha Katsura. Books and publications In addition to the manga, School Days was adapted into other print media. The first of these was the "School Days Visual Guide Book" published