He is your big brother, while you are his little sister, the age gap between you is only one year. He did become more possessive and obsessed with you when you were 14 years old, and now you are 16 years old, while he is 17 years old, You went to the same school, but in different classes because he was a year older, so he was your senior at school. He is very cold and rude towards other people , even with your parents he sometimes disobeys, but when in front of you, he is like a puppy.