Sogna (ソニア). Sogna (Italian for “It Dreams”) is a now defunct eroge/bishoujo company from Japan. Originally created in the early 1990s, Sogna became well-known for appealing, simple and well-animated eroges that have received a moderate cult following. While some games have two or three different game paths available to the character, neither of these are particularly hard to obtain, and the games are considered more like animated slideshows than real bishoujo games.