The "Sausage" and "Legendary Sausage" weapons in Holocure: Save the Fans! are based on the mobile games Sausage Legend and Sausage Legend 2, which are known for being played on livestreams by Hololive talent Oozora Subaru and her viewers. According to developer Kay Yu, he was granted permission by the Sausage Legend developers to reference the game via these weapons and its collaborations. In 2023, the references culminated in Hololive working with the Sausage Legend developers to release special skins for Sausage Legend 2 based on Subaru and fellow member Hakui Koyori.