I Want to Hear You Sing

This escape room had a total of seven rounds. Sigrid thought, since it took them approximately ten minutes to start the second round, although the designated time was two hours, she was sure that they would make it past the seventh round. Unexpectedly, after arriving at the sixth round, they stayed for more than half an hour before passing it. Now, it had been more than ten minutes in the seventh round, and they had not been able to escape yet. The first three rounds were easy, but if you follow the plot accordingly, once you found the clues then you're deemed passed. However, you had to find the correct clues from the hidden meanings of the text over the last few rounds. In the sixth round, they caught the psychopath male student, and they were locked up in a small black house by the staff. They had to find the hidden password in the small black house before they could get out. What entrapped them even more was that the small black house had a total of five locks. They had to unlock t