In the early morning, the sky is a blanket of clear sapphires, so pure and intense that they seem to drip excess blue dye at any moment.

In the courtyard of the Aoyagi family, there are several wooden figures about a meter from the wall, and four or five targets are scattered around it.

"Okay, first of all, the bracket." Aoyagi's hand shone with a blue light, and a sword-like object about fifty centimeters long extended outward from the palm, and the initial blur quickly became stable, like a sword made of translucent blue crystal.

With a few swings of the sword, Aoyagi poked the dirt on the ground with his chakra sword, and with some effort, the tip of the sword sank into it.

Carefully stabbed a few times at a wooden stake in the courtyard, and with a little force, the great sword shattered, but it also left a cut about three or four centimeters deep on the stake.

"It's still not strong enough, and the problem may be that the chakra is not sufficiently bonded, and it is too easy to break. We've got to find a way to put it together into a solid whole, well, and compression might be a good idea. ”

"This level of sturdiness is still not enough, and the saw's teeth will be broken very quickly, maybe with the force of a single blow. However, if the lethality is strong enough, it is not a big problem to shatter in one hit. ”

"Put this on hold for now, and then start building the chainsaw."

Just like before, Aoyagi's right-hand knife was wrapped in a layer of materialized chakra, extending a blade. Stabilizing the structure of the chakra in his hand, Aoyagi mobilized the chakra in his body and superimposed another layer of chakra on the opening at both ends of the blade, changing the nature and shape of the chakra.

With a bang, Aoyagi fixed another layer of chakra on either side of the original blade. Raising his right hand and putting it in front of him, Aoyagi frowned, the ends of the blade did not adhere to the symmetrical and regular serrations as expected, but were covered with protrusions of different shapes, not to mention whether the tip was sharp or not, and even the general triangle could not be formed.

"It seems that it is still too difficult to attach the sawtooth as a whole from the beginning, and I thought that at least there was a rough appearance."

Scattering the unknown object in his hand, Aoyagi began to shape the blade again.

Sure enough, let's take our time a little bit.

Driven a little chakra to climb to the end of the translucent blue blade, Aoyagi manipulated it to form a triangular shape and fix it, which was not difficult, and after only two attempts, he successfully constructed a serration on the left side of the blade, the thickness and sharpness were not bad after testing, although the sturdiness was not too good.

Repeating the zigzag construction, Aoyagi added sharp triangles to both ends of the blade and joined them together to hold them in place.

"It's taken too long to prepare. I hope that after practicing diligently, I can shorten most of the time. ”

Now try to make the sawtooth move. Aoyagi concentrates on the jagged chains of chakra structures, controlling their movements.

Kala - the chain moved slowly,

Aoyagi made it turn several times, and after getting familiar with the control method, it was not difficult to operate, so let's speed it up.

Driven by thoughts, the sawtooth spun faster and faster, emitting a subtle humming sound, faintly in danger of going out of orbit.

There is nothing wrong with the sawtooth moving slowly, but once the speed is increased, the bonding of the sawtooth chain and the sword bracket is likely to be broken, eventually causing the two to separate.

Well, it seems that we have to find a way to add chakras with enhanced adhesive properties between the two to hold them in place, and at the same time, these adhesive chakras can also flow to help speed up the sawtooth. It's just that in this case, the difficulty of control has increased again.

Maintaining his speed close to falling apart, Aoyagi brought the chakra chainsaw close to one of the wooden man's arms and swung it downward.

The noise sounded, the sawdust splashed, and the sluggishness from the chainsaw could be clearly felt, and after a slight pause, the translucent blue chainsaw firmly broke the surface of the wooden stick and cut the wood quickly.

Crackle - The chainsaw suddenly shatters, scatters into pieces of blue and falls, disappears and decomposes as they fall, and soon disappears without a trace, leaving no trace.

Aoyagi took a closer look at the damage to the wooden man, and in a short period of time, most of the wooden stick with the thickness of the baby's arm was sawed off, and the power was okay.

If the speed is increased further after the falling frame problem is solved, you can expect the power to increase again. In addition, the sturdiness of this failure really seriously restricts the power of the chainsaw.

"Well," Aoyagi counted with his hands, "there are a lot of problems to be solved in terms of sturdiness, the improvement of the chainsaw's construction, the speed of the saw, and the speed of the embodied chainsaw." ”

After determining the next task, Aoyagi feels bad, although it has been expected, but there are many difficulties and accidents, when will this ninjutsu be developed? Now I have to spend a lot of time exercising and laying a good foundation, and I don't have much time to train in ninjutsu.

After a little calculation, Aoyagi simply gave up the calculation, in short, there is a specific and clear method, just continue to work hard.

…………

"Hello, is Kitahara Baiqiu here?"

"Well, he's in the orthopedic department, and he may be helping with ward rounds at this time, so it's not easy to find."

"Okay, thanks."

After climbing a few flights of stairs, Aoyagi looked up at the sign, orthopedics, this is it.

Aoyagi walked aimlessly in the corridor, originally deliberately waiting until it got dark to come, but he didn't expect to be still working, so let's go shopping first, don't disturb his work.

Hey, I don't have to look for it anymore. The probe looked into a hospital room and saw a familiar figure inside, and the corners of Aoyagi's mouth couldn't help but bring a playful smile. However, some doctors feel that they are too short.

In the ward, Bai Qiu, who was wearing a white doctor's uniform, was standing in front of a hospital bed with another doctor, asking about the patient's situation, and recording something in his notebook from time to time.

Aoyagi walked over to the chair on the side of the hallway and sat down, quietly waiting.

After a while, Bai Qiu finished his rounds, and he looked tired after taking off his doctor's gown, ready to walk down the stairs.

"Bai Qiu."

Bai Qiu, who heard the voice, turned around suspiciously, and showed a smile after finding that it was Aoyagi: "Aoyagi, you're back." ”

"yes."