Illusion is a Japanese game development studio founded in 1995, known for its pioneering work in the adult gaming sector. The studio gained significant attention with the launch of "Koikatsu!" in 2018, which marked a notable milestone in character customization and simulation gameplay. Over the years, Illusion has expanded its portfolio with several major projects, including "AI*Shoujo," "VR Kanojo," and "Honey Select 2: Libido DX," each contributing to the studio's reputation for innovative adult-themed experiences. Key personnel at Illusion include its founders and lead developers, who have consistently pushed the boundaries of adult gaming. Their creative direction has led to the development of groundbreaking titles that integrate advanced graphics and interactive elements. Illusion's influence on the gaming industry is evident in its contributions to the simulation and virtual reality genres, particularly through the use of cutting-edge technology in titles like "VR Kanojo" and "Honey Select 2." The studio specializes in adult simulation games, focusing on character interaction and immersive environments. Illusion has received various accolades for its work, including recognition for its advancements in graphics and gameplay mechanics, solidifying its position as a key player in the adult gaming market.