"Your luck is truly good," Xin praised without hesitation, giving a perfectly timed look of admiration. "Even though this is a set of medicine-themed Mystery Box, drawing so many valuable potions is very rare."
"Hahaha."
Tsunade laughed heartily without any regard for her lady-like image, then reached out and smashed the last Mystery Box with a bang.
Inside, there was a book.
Here it is!
Xin's gaze slightly condensed.
This was the big gift he had prepared.
"What's this?" Tsunade picked it up and opened it. "'Applications of Chakra in Cellular Regeneration'."
"It's actually this!?" Xin's acting skills exploded, showing a shocked expression. "This is a treasure for medical ninjas! It's said that whoever can collect the entire series will become the greatest medical ninja!"
"The greatest medical ninja?" Tsunade glanced at Xin and sneered dismissively, "Tch."
She herself was quite a famous medical ninja.
It seemed this was probably the most useless item.
She casually read a few lines.
Suddenly.
Her expression changed.
"Lady Tsunade?" Shizune on the side asked softly, but Tsunade raised her hand to stop her from continuing.
The room suddenly fell silent.
Only the rustling sound of pages turning remained.
This book...
Many of the contents recorded in it were exactly the same as what she had researched and conceived!
Furthermore, there were many additions and interpretations that even she didn't know about.
Xin just watched with a smile.
In reality.
The author of this book was Tsunade herself. It was just that what Xin searched for was Tsunade's medical writings from fifteen years later!
And he had only excerpted a small part of it.
He specifically spent a certain amount of transaction points to remove any information that might appear, such as names, dates, etc.
The System, truly worthy of the word "omnipotent".
"Is there more?"
Tsunade was already deeply engrossed, but suddenly discovered that there was nothing below it.
The entire document was only a little over ten pages long.
For a top-tier medical ninja like her, this feeling was terrible.
"This is a series," Xin shook his head helplessly. "It's only found in the medicine-themed Mystery Box, but collecting the entire set is very difficult."
The third charm of the Mystery Box!
Collecting!
Just like a certain game where you collect characters.
One copy isn't very useful, two copies aren't strong, three copies are just average, but with four copies, you'll want to get her fully leveled.