I also thought the same like what about the grandpa that was mentioned in season 2 but I think this arc should have happened before they got married and open that bakery cause we had a perfect ending then the author drop this bomb. I think the may had forgot about the grandpa and after finishing it they realize that wait we can have one more season we have a perfect character to stir up trouble

I know this season is little too much to read but I was curious about grandpa too you know like will the story end just like this or the grandpa will plop out and we’ll have some arc about him too and he did appear welp this is still my favorite manhwa, this season was hard to read as I dropped it after reading 2 chapters but I had to continue cause I was curious too Not saying it’s good but appearance of grandpa and him behaving like that is to be expected ┗( T﹏T )┛