Kind of ironic that this chapter was released on the day after 8/8, honestly, but I'll try to summarize it as much as possible.
MC ended up going too far with his power harassment/abuse over giantess, so while the family and other maids were out for a few days, she decided to scare the shit out of him with heavy implications that she's big enough to eat him at any time. On the final night, to really traumatize him, she basically reintroduced him to the 'beauty of childbirth' as punishment for his harassment, using herself as the mother. I will not say anymore than that. After that, anytime MC tries to harass her again, she brings up 'that punishment' again, forever scarring him.
If you click on the Related tab on the story's page, there's a link to the original doujinshi there if you want to see for yourself.
