Aww, it seems that your kid is actually smaller in size than your big size type dog and it’s just too precious how smol they are ;3;
Anyway, your kid (accompanied by your soulmate pet) will go visit every great chef in each village in order to learn about making some delicious and nutritious meals to express their gratitude for you.
So, in Tsuyukusa village, your kid will visit Ginjirou and apparently if Komari is your wife, Ginjirou’s line will slightly be different and he will refer your kid as his adorable grandkid instead of refering them with their name!
It’s pretty cute and makes me happy to know that they have made Ginjirou able to recognize and acknowledge his own grandkid like that! :D