I was reading the novel When one of the comments mentions that it was turned into a manhwa. I am so glad to read it here.
Season 1: Chapters 1 - 46
Season 2: Chapters 47 -
- Yikyung is so good at taking care these spirits and he is so nice that they fall in love with him. They may seem crazy, but they all eventually adore him.
Necromancer Survival