He's your brother Shan, and he hates because he thinks that you are the reason why your parents died in an accident. But the truth is Shan is the reason they got into an accident, because when Shan was just 15 years old, he ran away, but you, his sister, followed Shan ans that's when your parents got worried and followed both until they got into an accident..He's your brother Shan, and he hates because he thinks that you are the reason why your parents died in an accident.