To actually access the demo, you usually cannot just open "part1" on its own. You will need to:
: It is standard practice to run a quick scan on extracted .exe files from unknown indie developers before launching them.
: This is a compressed archive. It uses the RAR format to bundle game assets (images, music, and executable code) into a smaller, downloadable size.
: Use a program like 7-Zip or WinRAR . Right-click on the part1 file and select "Extract Here." The software will automatically pull data from the other parts to recreate the full folder.
: The title suggests an adult-themed indie game or "doujin" project, likely featuring a character named Miko . This is common for visual novels or character-driven demos released on platforms like itch.io or Patreon.