Boring.
Just plain.
The character is a regressor, and instantly becomes OP. Makes people accept him as their lord, gives them OP items. His cheat doesn't seem to have any cooldown or limits either, just insta-upgrade from normal to OP items or classes. MC has no background story or anything, just that he was someone who regressed and was a decent summoner in his last life. No character development at all, MC doesn't have much of a personality either. Also somehow all the "top talents" of the future are conveniently located near him, of course most of which are women. He forces people to accept the harsh truth that the apocalypse is now, and that the world now follows the laws of the jungle, he's not wrong, but the world was literally changed maybe a few hours ago and now he's enforcing jungle laws like it's his life, not surprising since he's a regressor, but annoying.
In the end, this is a boring, gary-stu, insta-bs novel, I like apocalypse game like novels a lot, but this is just rubbish. Something that seemed like author shitted out because of some contract quota.
Here's some real recommendations for apocalypse like novels
World's Apocalypse Online
Kill The Hero (not really apocalypse, but dungeons descend on earth)
The Tutorial is too hard
Everyone else is a returnee