Ever since too many mangakas have been exposed as pedos, this types of stories keep giving me some creepy vibes.
At least in other mangas they play with the age or make it ambiguous, or they make sure to have the girl be 18 at the end.
This one went all in and the girl was married and pregnant at 16.
Maybe I'm beeing to sensitive, but at the same time, the author's new work is another romance with an underage girl.