It seems that the story is disjointed because they're trying to compress the manga into a 50 minute movie. There's no development of the characters and we can't understand their motivations at all. Why does Betty fall in love with the male lead and marry him within 3 minutes of their first meeting? Why does he immediately cheat on his "beloved" wife other than his being a stereotypical 80s dude? Even on the plot level nothing really makes sense. People are fighting each other because of... reasons? This is interesting as a historical look at the art of its time, but not for anything else.