Kud Wafter(クドわふたーKudo Wafutā) is a Japanese adult visual novel developed by Key and was released on June 25, 2010 as a DVD playable on a Microsoft Windows PC. The game is Key's eighth similar game in its history. Focusing on the title character Kudryavka Noumi, also known as "Kud"(クドKudo) for short, the gameplay follows a plot line which offers pre-determined scenarios with courses of interaction. The narrative details the lives of Riki Naoe and his close friend Kudryavka as they start to see more of each other in a romantic relationship.