I believe that there are two ways to set an expectation for a series, the title and the early chapters/episodes. If you're coming here due to the title, then you're in a bad place. The title might make it seems like you're gonna see from the POV of a nobody surrounded by OP Isekai-ers but it's the exact opposite right from chapter 1, and it keeps playing that joke completely straight in a way that never really grab me. From around chapter 1-14, the three Isekai heroes are nothing more than screechers screeching about how amazing and dumb the protagonist is with different flavor. Kirito, Glasses,and Girl.

I'm not really expecting them to be completely fleshed out from just a few chapters, but I'm also hoping that I won't be annoyed by their theatrics in a grating and unfunny comedy that I can't even find endearing because of how many repetitions there has been, and how much more there are to come every time I flip the next page.

Still, I believe there is a lot to praise about the manga in a technical term. Very clear and distinct art style and character design, communicating the actions in such a clean manner that I always take for granted for a long time. It reminded me a bit of Fairy Tail and One Piece a bit in that aspect, both in a very positive manner. However, whatever appreciation I have is heavily overshadowed by the feeling of betrayal between the contrast of title and content along with the grating nature of its comedy and story.

...at least, it will be that negative until I reach chapter 15.

I haven't finished the arc yet, but chapter 15 actually give some good character moments for Glasses. Heck, the story even deliver some funny jokes here and there, something I would've thought is impossible until that point. I don't know if this is just a stockholm syndrome where my expectation got so low that anything mediocre will satisfy me, but it did the thing that I thought it would never happen to a bad story with OP protagonist. It improved.

I still don't think it's worth spending your time and money yet, I still believe that 3/4 chapters I've read is bad but wait for a while and check for more reviews or comments and it might be one of those "excellent classics with slow start" that internet randos would recommend constantly.