Firstly i'd like to point out that the main character having a very large penis is just a minor joke and this manga doesn't have any sexual stuff in it at all.
The story starts like many typical isekai mangas do. Character gets resurrected in another world and gets powerful abilities.
The main character is more on the intellectual side and at least for now this manga seems to focus heavily on rpg elements like items, magic and crafting etc.
Overall as a typical isekai setting manga this one is definitely better than average.