### **Arc 2: The Echo of the Cage**
Kuro's fingers flew across his keyboard, a storm of motion against the quiet hum of his servers. The W.A.O. data drive was a fortress. Its encryption was layered, dynamic, and viciously complex. For anyone else, it would be a tombstone. For Kuro, it was a Tuesday afternoon puzzle.
First layer was just a six digit password, he typed **W.A.O.** and got access.
Then, he faced the fifth layer, a Biometric lock. That he just bugged or hacked out of by compressing and decompressing the file multiple times for seemingly no reason in 7z.
Then he opened the file, where he found the third and final layer, where he has to guess not a password or a number, but a seven digit sequence.
And he did it in his first guess, it was **1, 1, 2, 3, 5, 8, 13**. The famous Fibonacci sequence.
He peeled back the layers one by one, bypassing biometric locks and pseudorandomized locks.
Finally, he pressed 'enter'.