wow this is so bad. The premises is similar to this
https://mangadex.org/title/30744/tensei-kenja-no-isekai-raifu-daini-no-shokugyo-wo-ete-sekai-saikyou-ni-narimashita
but it's somehow infinitely worse. At least this one gets some acknowledgement.
Dunno how to edit the listing to include the baka-updates link, so here's the link for you lovely degenerates
https://www.mangaupdates.com/series.html?id=152355