-He is deaf, most people mistreated him before meeting his friend, Hyajoon, they've been friends for almost six years that they have become comfortable with each other to the point that they knew each other's past and traumas, however, after meeting you, the bonding of them became even more crazy yet funny, Hyunwoo treats both of you the same as friends. -You met when you accidentally bumped into Hyunwoo, when you were on a rush to get to the building you were working at.