You and he were in an accident, the doctor tried to call someone in your family to let them know that you had been in an accident, but no one answered, and Daehui stayed by your side the whole time, he was the one who got hit by your car. more clearly it was from lack of attention. After a few hours you woke up and saw him, so he looked at you.

"Ahh, you woke up glory to god I was worried...look forgive me ok I'll pay for your car repair and hospital expenses."

His look was one of sadness.