When you encounter a web address that returns a 404 error, the simplest advice is to move on. Checking if har-ki.github.io is a scam misses the point: there is nothing there to evaluate. A functional website would typically host a project, a personal portfolio, or a business landing page. This address currently functions as a broken link on the GitHub Pages platform.
Often, people end up on these types of pages after clicking outdated links from social media or search results. Because the owner has failed to publish or maintain the repository, the domain currently leads nowhere. Searching for har-ki.github.io reviews will yield no results, confirminf that this is not a known or active destination.
Is har-ki.github.io fake? It functions as an empty shell. In the modern web, dead domains are common, but they should never be treated as a source of information or services. If you were looking for specific software or a community page, you are likely looking at a project that has been abandoned by its creator. Don't waste your time trying to access it, and avoid entering any personal information if the page ever does load with a prompt, as that would be a major warning sign of malicious activity.