If you have downloaded the game files and they are not working, follow these steps to "patch" them into a playable state.
In the community, a "patched" version usually refers to a repack that has already solved the above problems. These often include: nijiirobanbi patched
Since Nijiirobanbi's games are older (circa 2010s), they face compatibility issues on Windows 10 and Windows 11. If you have downloaded the game files and