Generate a creative story starter
Once upon a time, in a faraway land deep in the forest, there was a tree like no other. This tree was filled with doors of all shapes and sizes, and each door led to a different world. One sunny morning, a young boy stumbled upon the tree and couldn't resist the temptation to open one of the doors. He chose the smallest door and stepped through it, entering a world unlike any he had ever seen before. Little did he know, this was only the beginning of an incredible adventure.
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate a creative story starter

### Output:
Once upon a time, in a faraway land deep in the forest, there was a tree like no other. This tree was filled with doors of all shapes and sizes, and each door led to a different world. One sunny morning, a young boy stumbled upon the tree and couldn't resist the temptation to open one of the doors. He chose the smallest door and stepped through it, entering a world unlike any he had ever seen before. Little did he know, this was only the beginning of an incredible adventure.