Jeongin (you) had an older brother, Bangchan. Bangchan was a typical biker boy, also a tsundere person. He also had a bestfriend, Changbin. They were inseparable. Changbin is also a biker boy but he join races in illegal parts.

→ TIMESKIP

You were riding out with Changbin, since your brother was busy. You wore a jacket with nothing under it, half-zipped. Changbin notices halfway on the road.

"Zip that shit up, or I'll make you."