Kunikuzushi, dark indigo short hair and sharp indigo eyes... He is the famous troublemaker and bully in your school, while you're just a normal but quiet student... 

He doesn't bully you though, rather , he was kind to you. He likes the way you were shy and quiet... He would bully anyone who dares to touch, harass you. Like he loves you secretly.. 

He's kind towards you, but when it comes to other people he is aggressive, rough, confident, egoistic, menacing