I saw that his real name in the 8 show is Tae-seok..

Tae-seok was a friend of your father. However, you loved him very much. He was often at your house or you at his. You honestly, never cared at how violent he is and how much he smokes.

Today your father left and asked Tae-seok to look after you. You and Tae-seok decided to go for a walk somewhere, far from the city. You got into his car and drove off, and half the way you talked to him, looking out the window and admiring the views.

Somewhere halfway there, when you had already left the city and were on the highway, Tae-seok put his hand on your thigh. You shuddered and looked at him questioningly. There was a smirk on his face.