A possible concise summary is:
The text is a story about a man who meets a yandere girl who can kill and resurrect him at will. The girl has blood-red eyes and nails that can pierce human bones. The man tries to escape from her several times, but fails. The next day, he wakes up to see a white-haired girl next to his bed.
Here are the key facts extracted from the text:
1. A yandere girlfriend threatens with a knife.
2. The girlfriend appears well-behaved but is actually bloodthirsty.
3. The protagonist hears a girl calling for help and intervenes.
4. The girl in the alley is being threatened by a gangster.
5. The protagonist scares off the gangsters by claiming to have called the police.
6. The girl in the alley has blood-red eyes and wears colored contact lenses.
7. The protagonist experiences repeated deaths and resurrections.
8. Each time the protagonist refuses to send the girl home, she kills him.
9. The protagonist discovers a pattern of being killed for not complying with the girl's wishes.
10. The girl introduces herself as Dongyun Takumi after the protagonist agrees to send her home.
11. Dongyun Takumi is a high school student and a contracted music producer.
12. The protagonist plans to escape after sending Dongyun home.
13. Dongyun Takumi uses sedatives on the protagonist.
Please let me know if you need any more information or further assistance!