This is your average isekai manga.
Premise or title of this manga are false because item's he has are nowhere near undesirable (He barelly uses any items. In 16 chapters on himself he only used 1, 2 maybe 3 pieces of equipment. No magical items, no consumables And those items he uses are quite useful even in that game world
For example ring that boosts XP by 100%. He said that everyone used it. Same with battle horse, guild house.
Issue was that main char was over 700 levels with limited storage space
)
Art and story are quite average.
MC is just plot device. Constantly fooled, used by others to advance plot forward (it is extremely obviously seen )
MC is fooled by GM to do excort and then scout missions. First mission he meets harem member with BIKINI ARMOR and at second mission he meets princess and he friend who both become another two harem members. It was forced because MC didn't want to do any escort missions, GM offered some magical items (MC has thousands of them) and MC readily agreed. Those items were never ever mentioned again
Side characters are simple charicatures
Spirit instantly fell in love with MC the moment she saw him. Princess and he friend proposed to him the moment they saw him killing orcs. Elf gave away a mansion for some sweets.
Now that I wrote most of the things that were bad, I can no longer say that this manga is average. Best parts (art and story) are generic and worst parts are terrible. This manga at best could be rated 5.