confused....

I think he doesn't give a shit (╥_╥)

Someone in the comment said that it was mistranslation and it actually said 'grandson'

he does not care about his grandchildren, he cares more about his son because the wolf form of seolhyun might hurt hwa

Ohhhhh thanks for telling

I think he cares to a degree but can't bring himself to be attached because they're mortal. Yibin is traumatised and doesn't want to be hurt by someone he cares for dying again so he just cant care anymore