@FudgePucker I mean yeah, the spider side has been pretty faithful minus a few details, but due to the missing chapters I can't really call it a great adaptation (not the mangaka's fault though, considering how slow the releases are we'd still be in volume 3 at this point if they did all the chapters), if only for the fact that it sets a different expectation of the series.
In the LN from the start we have
On the opposite side, the manga is now nearing 50 chapters and there's barely been anything but ''Spider fights monsters and makes funny references'', so needless to say that a lot of readers would, at this point, think that this is supposed to be a fun casual read with little to no plot. So now that we're finally getting to the more character/plot heavy parts of the story, it is likely to be jarring since there has been no precedent for such a thing so far. I hope people will give it a chance and keep going, but I really don't know if the manga will work as well now that is has no choice but to do the plot heavy parts (especially since there's some plot points that have been missing so far and so they'll have no choice but to do some extra set-ups for those).
In the LN from the start we have
two seemingly separate stories that slowly get intertwined over time, showing us that this a story that goes beyond our protagonist as we slowly uncover the mystery of the reincarnation and the truth about this strange world operating under video-game logic through the point of views of numerous characters with unique and engaging personalities, backgrounds and perspective. The fights for survival our spider experience is but one facet of this story. And even if you don't think the other characters are as interesting as her, their mere presence from the first book onwards manage to tell you right off the bat that there is more going on in here than just ''Spooder fighting monsters''