After Houka recorded the ninjutsu on these scrolls, he tossed them to his shadow clones and had them practice Sealing Jutsu.
As a result, every single scroll bore sealing restrictions until Kakashi later took the box away.
In order to learn the ninjutsu written on them, Kakashi had no choice but to pick up Sealing Jutsu again and painstakingly break the seals on the scrolls one by one, suffering quite a bit in the process. Then Naruto appeared, noisily demanding the wooden box from him. For reasons unknown, Kakashi actually sealed the scrolls again!
Thus, when Naruto opened the scrolls, he naturally could not make out the writing on them.
He squatted beneath the tree roots, pursing his lips as though straining on the toilet, staring fixedly at the scroll until his face turned red, yet he still could not understand a thing!
"What the hell is this?"
Naruto angrily tossed aside the scroll in his hand, then took another from the wooden box. He opened it and found that he still could not make out the writing.
"You've got to be kidding me!!" Naruto flew into a rage from humiliation and shoved the wooden box over. Dozens of small scrolls scattered across the ground. Several even spun in circles, unfurling to reveal blurry writing on their surfaces.
"Huh?" Naruto's eyes suddenly lit up. He pounced like a starving dog and grabbed one of the unfurled scrolls.
"Multiple... Shadow Clone?"
Naruto looked at the clear writing, and astonishment appeared in his shining eyes. "Why does it start with the Clone Technique I'm worst at?"
But then his gaze fell on the scrolls scattered across the ground, and hope rekindled in his eyes. He hurriedly spread open all the remaining scrolls, but unfortunately, not a single one had legible writing.
"Why