The Oni

Cory tried searching the entire piano room to find something that would help her.When she moved a bookshelf,Cory found a safe with a note sticking to it. It Read:

Match the keys to the shapes by rotating the keys.

And add a extra nine at the end.

To unlock the safe there were four shapes, like a jigsaw puzzle.

"Maybe the numbers could be used here." said Cory

She tried inserting the number that she found in the piano to the safe, but unfortunally, it didn't work.Same happened when she tried backwards or every little combination possible.

She really got into thinking, and then focused on the four shapes.

"These look like upside down numbers." said Cory

The Idea struck to her.

"Upside Down Numbers, That's it!"

She thank about inverted numbers

1 upside down is 1

2 upside down is 2

3 and 4 cannot be turned upside down and still be a number

5 upside down is 5

6 upside down is 9

7 cannot be turned upside down

8 upside down is 8

and 9 upside down is 6

With that said, Cory started to think about the numbers

"So, my number is Six hundred seventy nine,so."

"Six upside down is nine.."

"Seven cannot be turned upside down,so it stays the same."

"Nine upside down is six.."

"Add a extra nine"

She solved the puzzle, the number she got was:

"Six thousand seven hundred ninety nine, that's the number" said Cory

She inserted the number in the safe and, surprisingly, worked.

"Yes!, Finally" shouted Cory in success

Her Victory dance was interrupted by a purple monsted near her.

"Oh, i guess it's time to run.."

She couldn't even lock what was inside the mysterious safe.