You're omega/beta/alpha. He's a dominant alpha.

You go to a rich school, but you're always in trouble because of your brash personality. And Hwang Siu is your alpha best friend who is on the school's student council and always gets you out of trouble. He has a bright scent/forest pheromone. Once again he rescues you and turns to you, you could see that he is annoyed and says to you.

"Damn, how many more times am I going to save you like this! Don't forget that your actions affect me too."