Cheesennn's Manga

Ik this is an Indonesian webtoon right? Does this plot even make sense or is it just the cultural difference? How does marriage / work / pregnancy of highschoolers is talked about like this as if it's nothing? How can kids be kicked out of school and thrown into marriage like that? And what the hell is about all this sexism in here? Mom saying her daughter shouldn't do anything but stay at home and wait to have a child as if there's nothing wrong with this + the mom is portrayed as a 'good' character unlike the guy's parents. Idk plot seems so weird and messy and unrealistic to me.