I have read up to chapter 59. Unlike others, i don't cares about the fake title, OP protag is so basic that it's forgettable nowadays.
The issue i have with this manga, is that it had a strong build up, (mid tier ++). And a bit of some good plot (listen i read a lot of trash isekai, so i least it was decent, and it still has no harem, which is great). But more the story go, more it fall apart, let's add dungeons because "it's fantasy", let's add technology, but it doesn't spread because plot. Let makes everyone look weak, make the fight boring and skippable. It's just jumping from idea 1 to idea 2.
Some people said that the vn is great, but i still wait to see what they fond great enough to read it all. This manga could go further is time skipping, i mean it jumped the grind, so it can jump the boring side-quests and useless fights.
It does have some development for the sidekick, even if, like the MC, they don't get that much yet.
Oh and as usual, the isekai part is basically useless, it's just name dropping some gamer words here and there