"Kagetsu Tōsen: Legend of the Four Kings" is a Japanese visual novel and adventure game developed by Kagetsu Tōsen. The story revolves around a group of characters known as the Four Kings, who possess unique abilities and face various challenges in a fantastical setting. Players engage in decision-making that influences the narrative and character relationships. The game features a blend of action, strategy, and role-playing elements, allowing players to explore different story paths. With its rich character development and immersive world, "Kagetsu Tōsen" has garnered a dedicated fanbase, contributing to its popularity in the visual novel genre.