This is a hard one to rate, and I feel it all boils down to what lens you are looking at this through. In terms of isekai trash +ero-manga it's a solid 8.5-9/10 because sometimes you need that power fantasy and sex in your life. It's definitely not a piece of art that should be admired and be held up as the gold standard so from a typical manga perspective (where you're not only looking for isekai trash, but at the same time you enjoy it) it's like a 5 or 6. The story honestly has some great parts in terms of the actual issues the MCs friendsface with his "death" but pretty much each one of them is solved instantly by sex. So if that's what you're looking for, 10/10. If not, well then you are reading the wrong manga.

TL;DR - upper echelon isekai trash, but isekai trash in the end.