What happens when Amir discovers that Hassan is his half-brother?

When Amir discovers that Hassan is his half-brother, it shatters his understanding of their past and deepens his feelings of guilt and betrayal. This revelation highlights the complex dynamics of their relationship, as Amir grApples with the implications of their shared bloodline and the injustices that Hassan faced. It forces Amir to confront his own moral failures and the societal divisions that have defined their lives, ultimately driving him toward a path of redemption.