The premise is good, but the execution here is disappointing. An adventurer becomes an undead monster and has to figure out how to adapt. Nice idea, and lots of potential for interesting moments and development, but the show does little with it. The main character has no personality, and is painfully boring. Typical "clueless MC" type hero. The side characters are not any more interesting or with much more personality. MC is seemingly unaffected by his condition, going about his same life as before, except with more clothes to cover his body, and more strength to do his adventurer tasks.
Not recommended unless you want a very plain show to watch to balance out something else more stimulating.