As usual, a bunch of idiots in comments.
Nope, his son doesn't want a sibling. Well, he doesn't tell it. He just declares that "yes, my dad can"
And I also root for them making love again. Cause it will be wholesome. BUT, I would like it to be protected one.
Oh yeah, and his second son seems to be a good man too.
This series is great, and genuinely one of the most interesting and entertaing slice of life manga that I have ever read. I love how the artist does facial expressions, especially in gags.
I love how their facial expressions remains similar to an old person, you can compare their smile in their young days and now. This is important to underline that they still lived a lot of years