To cut right to the chase, I see no potential in this. Zero at all. It's your basic revenge fantasy with the "twist" of using existing isekai mcs as the villains for... idk, "symbolism?" And reading the chapter got me straight faced. It relied too much on shock value and I didn't really care when the village went up in flames. Or rather spawned in with flames since we saw nothing that lead up to that. Not even one of them mentioning a hint of smoke. And yes, yes, the rape scene was horrible, but... it didn't hit like I think it was meant hit.
"Woahhh, look at these characters I made! Look at them so happy, so innocent, having a good time. But guess what? One dead and another dead then raped. Bet you didn't see that one coming, huh?"
Also the witch was so strange and felt heavily like an authors surrogate. "One of them was a shut-in who always escaped reality through video games. In a world without powoers, he was nothing more than a hate filleld dog who followed oroders. Despite wanting to fall in love more than anyone else, he pathetically coped with his loneliness through the world of 2D." God fucking damn, you gonna call his mom a bitch too? This feels way more personal than anything. Some might chalk it up to an extreme view by a character, but we see no reason why witch lady should hate the reincarnated more than she says. Not even a simple backstory just a "I hate them all, they my opps, now go spin around his block."
If you see potential in this then that's all on you. But me personally it feels uninspired, treated the deaths, rapes, and overall premise very poorly. Again, some might say its this way because of the chapter but I disagree. A writer should fit enough into one chapter to hook in readers the right way by introducing characters naturally, explore world building and magic as the characters go on their lives, and the conflict of the story should be big enough to be known, but still remain a mystery. This is only my personal take so if you disagree, that's ok.
TL;DR
No potential, handles situations poorly or not enough, some writer bias, and overall uninspired revenge fantasy that you've seen before.