Lemon's manga / #Horror(3)

The premise of both parents acting as if the other is dead and hiding it from their child is truly mind-boggling. I get that it's fiction, but is it even plausible in reality? And what were the parents fighting over to resort to such drastic measures? It's not just unrealistic, it's downright cruel to the child and their emotional well-being. However, I must admit it's an intriguing plot that keeps you on edge. I still struggle to comprehend the logic behind their decisions, though