Monster explanation:

【Live-Dead】

These are special Undead created when life-attribute magic is used on fresh corpses that have not yet undergone rigor mortis to grant artificial life from the outside, resulting in a soulless body with biological processes such as the cardiac and respiratory functions restored.

As they are corpses without souls, they do not even possess the most basic intelligence and do not attack the living like Zombies. All skills that the owner of the body originally possessed while alive are lost, other than skills that he or she was born with. (From this fact, there are scholars who insist on the theory that skills are dependent not on the body, but on the soul. But they are in the minority.)

(Chapter 29)