My Bad StepBrother || M. Yoongi

My mother married to her NEW HUSBAND.. We're arrived at their wedding place.. There a handsome boy sat next to me..when I looked at him, my heart suddenly pounding a bit fast. "Hey, are you my step sister?" He said coldly. "W-what?" I'm confused. He chuckled bitterly, "Are you Lee Soo Yeon?" I nodded, "yes.." "Nice...