Kyūgō-tan, also known as 95-tan, is a personification of the Windows 95 operating system in the OS-tan series, which anthropomorphizes computer operating systems as anime-style characters. She is depicted as a cheerful and somewhat nostalgic girl who often wears a plaid dress and a floppy disk headband, reflecting the era of Windows 95. Kyūgō-tan plays the role of a pioneer among the OS-tans, symbolizing the transition from older systems to the modern Windows family.