One day, in a small town, a mysterious package arrives at the doorstep of the protagonist

One day, in a small town, a mysterious package arrives at the doorstep of the protagonist. Curious, they open it to find a key with an ornate design and a note that simply says, „Find the lock that this key opens.“ Intrigued, the protagonist sets out on a journey to uncover the secrets of the key and unlock the mystery that lies ahead.