A possible concise summary is:
A man with amnesia is visited by the ghost of a woman he liked, who was killed by his colleague in a robbery. She helps him remember his past and find her killer, while they fall in love. He confesses to the police and says goodbye to her.
Here are the key facts extracted from the text:
1. A conversation about driving directions and skill occurs.
2. An accident happens, prompting a call to 911.
3. A person is identified as Lee Mungi, age 32, with no family, living at Guui-dong 821-3.
4. Lee Mungi is diagnosed with amnesia.
5. A character named Kim Yeonhwa, age 25, is introduced.
6. Lee Mungi has a job as a bike courier.
7. A ghost is mentioned in the conversation.
8. The narrative includes a visit to a funeral home and a discussion about justice and revenge.
9. Lee Mungi's phone loses its memory, paralleling his amnesia.
10. The story involves an orphanage and characters with a shared past.
11. A murder investigation is underway, with Lee Mungi as a witness.
12. The narrative concludes with Lee Mungi being asked to identify the suspect.
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