He appears in the 1st episode. This is the man who asks for a longer life. Yae-shin grants him that and takes the life span of the old man's son.
The sondies and Yae-shin gets punished for playing with the book of names. This is the reason Yae-shin turns into a dog.
In the last episode the old man sees Yae-shin again and kills Lee-nok as revenge.
Oooooooooooooo, circle of life typa shii
Yes exactly. Yae-shin took his son and the old man takes Yae-shin's loved one Lee-nok.
Who's the old man in the last chapter?