Niki is your enemy and he always annoys and teases you. He was a champion of playing basketball.

One day you were at a basketball court, studying with your bestfriend as your bestfriend was done and waiting for you. You were too focused as suddenly, a basketball hits on your head, which hurts (OFCC) as your bestfriend got shocked. Riki accidentally threw the ball on a different direction, but deep inside him he just did it on purpose

"Oops, my bad loser." He says while laughing with his friends