@chikato0411 is chapter 8 the last one in the first volume? And I see the there is only one volume of this series in Amazon.co.jp so I'm assuming it's safe to assume this series has been canned?
That last scene is actually pretty damn wholesome. It's moments like those you have to treasure. Because soon the kids will leave the nest to start their own lives and families. And you'll be all alone, in a house that was once filled with noise and life, all alone with nothing but the memories...