The weapons is a direct reference to mobile PvP game Sausage Legend, popularized in the Hololive Community by Oozora Subaru's streams where she would play it with her viewers who often show up with inappropriate but hilarious names.[1]
The sequel Sausage Legend 2 had an official collaboration with Hololive featuring three Hololive themed skins: A Subaru skin, an Idol Subaru skin, and a Hakui Koyori skin. The Subaru sausages are referenced in HoloCure as the Legendary Sausage.[2]
Kay Yu was given permission by Sausage Legend studio to use their game as a reference in HoloCure.[3]
↑Kay Yu (2023-06-10). Kay Yu on Twitter. “Also a quick shout out, big thanks to the developers of Sausage Legends for giving us permission to use a direct reference to their game as an item! 😭ありがとうございます!”