Always ensure you download these ZIP files from official or verified community sources to avoid malware. Developer Tools — Ren'Py Documentation
Usually found as a PDF or text file on the developer's Patreon or itch.io page. These are the most common "papers" associated with visual novels to help players navigate branching paths and unlock specific scenes.
While there is no formal academic "paper" on this specific file, "Secrets of Hokwiton" is an adult-oriented visual novel. The file Secrets_of_Hokwiton_v0.4.0_win.zip contains the Windows version of this game.