This is a summary of the text:
- Jongkook finds his house decorated with pink hearts and flowers by someone as a prank.
- He calls his friends DinDin, Sechan, Seyoon and Jongmin to find out who did it.
- He interrogates them one by one, but they all deny it and act suspiciously.
- He makes them come to his house and locks them in different rooms.
- He threatens to punish the culprit severely, but no one confesses.
- DinDin sends him a message saying that he and Sechan did it as a joke to help him find a girlfriend.
Here are the key facts extracted from the text:
1. The text is a transcript of a video where someone pranked Jongkook's house by decorating it with pink items.
2. Jongkook suspects that one of his friends (DinDin, Sechan, Seyoon or Jongmin) is the culprit and interrogates them over the phone or in person.
3. Jongkook threatens to spare the one who talks right now and to punish the one who denies it.
4. The prankster is revealed to be Jongmin, who planned the concept and set it all up.
5. Jongmin says he did it to make Jongkook happy and help him find a girlfriend.