Tensei Shitara Slime Datta Ken
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 dragons and magic, he's a little disappointed to find he's become a blind, boneless slime monster.
(Source: Kodansha USA)
Note: Chapter count includes 2 bonus chapters.