That Time I Got Reincarnated as a Slime, Volume 10 (manga)

As players of Monster Hunter and Dungeons & Dragons know, the slime is not exactly the king of the fantasy monsters. So when a 37-year-old Tokyo salaryman dies and wakes up in a world of elves and magic, he's a little disappointed to find he's become a blind, boneless slime monster.

SCHOOL OF HARD KNOCKS

Over the course of his new life as a slime, Rimuru has overcome many trials and tribulations--aggressive neighbors, treacherous plots, deadly beasts--to build his very own nation of monsters....