Little Busters! Converted Edition

Little Busters!' story revolves around the main protagonist Riki Naoe, a young male high school student. When Riki was a child, his parents died, leaving him hopeless and depressed. He was saved by a group (three boys and a girl), all his age who referred to themselves as the Little Busters, a group dedicated to fighting evil and preserving justice. The leader of the group was Kyousuke Natsume who had a younger sister named Rin. The other two members were Masato Inohara and Kengo Miyazawa, who were friends despite being rivals. They took Riki out and played together with him during his time of need, making him the fifth Little Busters member. In time, Riki enjoyed playing with them, and his grief over his parents gradually faded away. When the story begins, Riki and his friends are seemingly in their second year of high school, except for Kyousuke who is in his third year. They still hang out together, and enjoy their school life.

Prototype released a PlayStation 2 (PS2) port of Ecstasy titled Little Busters! Converted Edition on December 24, 2009, which removed the adult elements of the game. The PS2 version was available to try at Key 10th Memorial Fes, an event held in commemoration of Key's ten-year anniversary between February 28 and March 1, 2009. The Playstation 2 adds scenarios for Sasasegawa Sasami and Futaki Kanata, and also adds a new heroine, Tokido Saya.