To open a lock, what is essentially needed is not a key, but the key to breaking the barrier.
And we usually call this key... Key.
This is a non-realistic detective story, please do not take it seriously, it is mainly for entertainment.
Note: Although this is the main story, the main story is not finished, and it has been determined that it will not continue. The article will not be locked. Friends who don't mind can pass the time. "Mystery Collection 3" will continue to be written. Please see the first chapter for details.
Intention: main line
