I purchased (and read) until the fourth volume of the LN, then dropped it.
The concept is relatively novel, the execution is ok, but I can't tolerate anymore of the useless references the author puts into every single thing.

I just don't care if something is an obscure reference; this feels like when fans of Rick & Morty tell other people that you need to be all brains to enjoy the show. It's just for self satisfaction and filler.

Sorry for my rant.