I won't lose you again

Ji-hoon passed away in a car accident, and due to the shock, Seung-cheol attempted suicide for a few days, but was so scared that he turned back. However, one day, while walking back from a suicide attempt, he was walking in a daze and did not see the green light change to red, so he ended up dying in a car accident while crossing the street... When he opened his eyes, he suddenly started seeing strange situations on a black background...