Boku no imouto

and again I draw this siblings~ they so cute aren't they??
my OC about a nii-chan who is a delinquent and he was the strongest in his school. his parents already divorced so he lived with his father who always busy with work.
one day,while he was ditching school and was about to take a train to went home,he saw this girl at the other side of the platform. he realized that the girl was following him and on the way to his apartment where he lived alone because his father was a workaholic, he met with his 'not so rival' and planned to leave them alone(because they sooooo weak!) but when he realized that the girl still following him and he scared that the girl will be a victims ,so he attack his enemy.
he thought that the girl will leave him alone after she saw the fight but he was wrong!
the girl kept following him until in front of his house... fed up with the girl,he asked her why she following him.
so~the girl said that he is her brother~
well...that surprised him because he never know that he had another siblings..so...that the beginning of this story~~

how was it?? does it interesting?? NO?? never-mind~~ ahahha