Qing Yu thought that it was not easy to find someone who overtrained his body, and even if someone was willing to act as this guinea pig, it would take a certain amount of time to exhaust all his physical strength.

However, the truth did not make them wait long, and soon someone brought the guinea pig.

And this guinea pig is none other than Maite Kay, who regards Kakashi as his lifelong rival and best friend!

Qing Yu was immediately stunned for a moment, obviously not expecting this result.

But after thinking about it, the person he needs to find who is 'overtrained' and 'physically overdrawn', is there anyone in Konoha who meets the standard better than Kai in the whole of Konoha?

And judging from Kai's completely soaked clothes, this guy must have had a hellish special training before he was found!

In addition, don't underestimate Kai in this period, although Kakashi graduated at the age of 5 and became a legend, Kai is not much inferior, he graduated from the ninja school at the age of 7, which took three years, only one year less than Kakashi.

Although he is only a shinobi at the age of 14, his strength has been recognized by many people, and it may not be long before he can rise to the rank of shinobi like Kakashi.

And Qingyu probably remembers that Kai became a real shinobi when he was 16 years old, and this time was only 4 years later than Kakashi, which was already a very proud achievement among his peers!

Then it is worth mentioning that among the future Konoha Twelve Little Strong, the first one to skip a grade and be promoted to Shangnin is Ning Ci, who is only 15 years old...

So, Ning Ci, you died so miserably!

"Now there is a task that requires your cooperation, which may have a certain impact on your body, and the bad effects are not ruled out, but there is a high probability that it should be a good effect, and it doesn't matter if you don't want to, it's not a mandatory task." Watergate looked at Kai and said gently.

If you change to someone else, you will definitely have great concerns at this time.

But Kai is different, as soon as Watergate's words fell, he gave a thumbs up, showed his white teeth, and said with a hearty smile: "Leave this task to me, I am very confident in my body!" ”

Shuimen rubbed his temples helplessly, he knew that this would be the result.

But he wasn't too worried, after all, Mikawa Shinobu wouldn't let Qing Yu mess around, plus Qing Yu himself had used it, and it was many times, so there was a high probability that there would be no danger.

So... Just give it a try!

So, then everyone moved directly to another room, which had already been arranged according to the requirements.

"Hokage-sama, what do I need to do? Is it to break this barrel? ”

As soon as he entered the door, Kai began to move his body with some enthusiasm, you must know that he has always wanted to go into the shadows to help Kakashi, but Hokage-sama has always disagreed, which undoubtedly makes him regretful, and he also feels that he has lost a lot of fun in life.

"No, then you'll need to take off your clothes and stay inside, well, at least half an hour."

Kai, who was not afraid of even the sea of swords, became a little squirming and stunned for the first time after hearing that he still needed to take off his clothes!

"Take off, undress!?"

"That's right, someone recently found a recipe for a medicinal bath, which can repair the body's dark wounds, improve cell activity, replenish physical exertion, and many other effects. Although some people have already tried it, it still needs to be tested by more different people, and there may be any side effects, so you still have a chance to say no. ”

Mizumon seems to have the same idea as Mikawa Shinobi, and doesn't want to put too much pressure and trouble on the child Qingyu, so he didn't mention who provided the prescription, and the test was all voluntary.

But Kai was not frightened, and instead looked at the barrel with fiery eyes.

Repair a dark wound on the body?

Improving cell viability?

Replenish physical exertion?

Isn't this a medicated bath just made for me!

If this thing works, doesn't it mean that he has a few more hours of time to exercise every day? Or even more!?

As a training maniac, the first thing that comes to mind is to be able to devote more time to cultivation.

And Kai didn't know that his extreme exercise method would cause damage and overdraft to his body, but he couldn't help it.

Because in other respects, he has absolutely no corresponding talent!

Only hard work and sweat will not deceive him!

So he can only go one way to the black, overdraft the future, in exchange for the present!

He doesn't want to be a shinobi for the rest of his life!

Thereupon... Bang!

Ignoring the presence of outsiders, Kai took off his clothes as quickly as he could, and then jumped into the barrel.

The water temperature is around 45 degrees, which is a little hot, but it is much more comfortable for him!

"Is it okay to just keep soaking like this?" Kai asked, with only his head on the water, a little embarrassed.

At this time, Shuimen looked at Qing Yu with a gentle smile, which meant that you can come in person, and you don't have to worry about someone intercepting the remaining medicinal powder for reverse pushing.

At this time, Qing Yu was also infected by the kindness of the four generations, and the worries in his heart were put down a lot.

So he directly handed the medicine bag to Mikawa Shangshinobi, "Just pour it all in." ”

Mikawa Shinobu was even more unambiguous, and immediately poured all the black powder into the wooden barrel in front of everyone, and then threw the remaining packaging residues directly into the stove used to boil water on the side without thinking.

He did this not only to avoid suspicion, but also to express his attitude.

This made Qing Yu's gaze at him softer, and even Shuimen looked at him with appreciation.

Then, the hot water poured into the powder turned black almost instantly, and the color alone was extremely terrifying.

And at the same time, Kai also seemed to feel the effect of the medicine, and his face couldn't help but change, and he was very serious.

"How do you feel now?"

"It hurts like a pinprick in a pin, but it's still tolerable." Kai replied truthfully.

Shuimen nodded silently, about this 'side effect', he had already heard Qing Yu explain it himself before, so he didn't make a fuss.

So time is waiting, slowly passing...

At first, Kai was a little uncomfortable, but as time went by, he not only got used to taking a bath in front of others, but also adapted to the pain brought to him by the medicinal bath, and slowly he could feel a warm current beginning to swim around on him, and the places where the usual accumulation of dark injuries were more serious were even hotter, like a fire!

Maybe it really works!

Kai's eyes flashed with excitement.

In about thirty minutes, the black liquid in the barrel had begun to become transparent again, which meant that the effect of the medicine had almost dissipated, and most of it had completely penetrated Kai's body.