リトルバスターズ!
"Ontology" is an arrange album which contains a selection of songs from the visual novel "Little Busters! Ecstasy", remixed by members of Key. The album is otherwise composed, and produced by Jun Maeda and members of PMMK. This album was released as a bonus item, included with the limited edition first printing of the PC version of "Little Busters! Ecstasy" released on July 25, 2008 by Key Sounds Label bearing the catalog number "KSLA-0042". As a result, it was not released for individual sale. Of the nine tracks on the one-disc album, seven are remixed background music from "Little Busters!", and two—"Neko to Garasu to Marui Tsuki" and "Kakeru"—are exclusive tracks of "Little Busters! Ecstasy".