Responses
Hmmm rather than saying the story is similar, it's more like the concept is similar. Average person continuously regressing. But storywise it's definitely different. For this one, he regress back to the same starting point each time he died. In the Eternally Regressing Knight, if I'm not mistaken (it's been a while), he regress a day before his death, right?

...where the MC keeps on regressing. And no, I'm not talking about the sss suicide hunter guy. It's another story with similar premise as this one, only difference is that it's not a murim story. That MC regress a lot, A LOT, just to defeat ONE guy. Because he was just so ordinary and untalented.
But honestly, are you sure being able to maintain yourself while regressing repeatedly itself is not a talent? A normal person's mind would've already been broken.