Kishi Danchou no Musuko wa Akuyaku Reijou wo Dekiai suru - Vol. 5 Ch. 24

[MangaDex]

 

[ARealCoolGuy]

An entire chapter left, just for the boning? Hell yeah!
Now that's what I call a climax!

 

[Shinigamisama]

Congratulations! And now we follow Abe's advice.

 

[Kaarme]

Congratulations! And now we follow Abe's advice.

Nobody in this series is following his advice. Ex has no siblings, despite his parents obviously loving each other. Yet maybe they merely are unlucky, so it's not for any lack of trying. But then when you look at the other families, none of them has more than one or two children.