Is the car accident witness a celebrity? [V]

The female protagonist, Soo-min, loses her memory after being hit by a hit-and-run driver who hides his identity. She even tried lucid dreaming, a method of manipulating dreams, but ultimately failed to identify the culprit. However, through lucid dreaming, she discovers Tae-hyung is a witness, and the story centers around her search for Tae-hyung and the culprit.