Just like Chakra Scalpel Jutsu, Blood Coagulation Technique also had a simple three-step process of learning.
First was Chakra Localization, where he had to learn to precisely focus his chakra to a very small, specific area.
For that, he could make a tiny, shallow scratch on his own arm or on some animal for practice.
Then he'd channel a small amount of chakra directly to that bleeding point.
This step had a simple goal is to feel chakra interacting with the blood and tissue, learning to direct it accurately.
Second was Simulating Coagulation, where he then practiced applying a specific intent to the chakra – to rapidly stimulate the natural clotting factors in the blood.
It would need observation on how quickly the bleeding slowed and stopped and how to adjust the chakra flow and intensity.
And last was Rapid Application, which was the final step focused on applying the Jutsu instantly and instinctively upon receiving a wound.
This ensured that the user could stop bleeding quickly and efficiently with minimal effort and made it practical for real combat.
Kaiji was happy that it was easier than Chakra Scalpel, and might only take a week or two.
"If I start more focus on these two techniques for next two weeks, maybe I would be able to learn than within time that frame," he contemplated.
While it took more than just a few weeks to master these Techniques, learning them to the point of being usable only took a few weeks of dedicated practice.
He decided to focus on training in these two techniques for the next two weeks mostly.
While his morning training remained the same, with the addition of starting to practice breathing activations.
He could completely link his chakra with his breathing techniques to gain a sudden burst in speed and strength.
He had confidence in being able to unlock the first breath in practical, but the main problem would come in controlling that sensation and enhancement.
Well, that was the reason he started learning Medical Ninjutsu, to minimize any risk if it were to occur.
"While that was for tommorow, I think I should atleast take a look on Earth Release Jutsu," he said to himself.
Even though he didn't like to be practicing them just immediately, taking a look at them wasn't much of a bother.
He would read the Fuinjutsu scroll before sleep at night.
He first picked out two E-rank Doton Jutsu.
While there were obviously more than just two E-rank Earth Nature Jutsu—
He only picked two E-rank and two D-rank after some deep thinking.
He only selected simple ones, one offensive and one defensive of each Rank.
The main thing was to be able to perform and use low-level Doton Jutsu properly.
After all, he had the most effective B-rank Earth Release Jutsu, which he would practice afterwards, which was ''Earth Style: Earth Wall Jutsu''.
First, he unrolled the defensive one, which was called ''Earth Release: Earth Armor'' ('Doton: Tsuchi Yoroi')
Which has simple hand signs of Dog → Boar → Bird.
This Jutsu creates a very thin, almost skin-like layer of hardened earth over a small, specific part of the user's body.
It provides minimal protection against light physical impacts and abrasions.
It provides protection against scrapes while traversing rough terrain, and their knuckles to prevent bruising during hard punch.
It also protects hands while digging through sharp debris, allowing the user to briefly slide across a rough surface without tearing skin.
Since it's an E-rank, it has a very low Chakra cost.
Though for the same reason, it has a limited range for the protection layer, covering only a small area or part of the body—
And only protects against piercing and abrasion, not heavy impacts.
And its effect was temporary, not long-lasting, and could not be maintained for a long duration.
"Useful for it's rank..." Kaiji nodded, understanding that E-rank Jutsu weren't much useful anyways.
Even Transformation Jutsu had a huge flaw, it could only transform one into someone else but couldn't copy other person's smell and chakra.
Not many were able to smell to find the difference, but any experienced Shinobi would be able to see through that transformation.
Then there was the E-rank Body Replacement Jutsu, which at first glance seemed like a space-time teleportation technique.
In reality, it's just a high-speed movement and object replacement.
The sudden disappearance and reappearance, often accompanied by a puff of smoke, gives the attacker the impression their strike was successful, only to find a decoy.
But that's it; it's not any Space-time Manipulation or teleportation technique—
But rather just an evasion and escape technique.
No matter how any E-rank Jutsu sounds or looks at first glance, in the end, they are just E-rank and can't be any more powerful than necessary.
Then Kaiji unrolled another E-rank Doton Jutsu which was offensive.
Its name was ''Earth Release: Earth Needle'' (Doton: Tsuchi Hari) with simple hand signs.
This Jutsu allows the user to quickly sharpen a small patch of soft earth or mud into a short, pointed spike or needle.
It is used for distraction, minor damage, and area denial.
It is effective for piercing thin material and causing minor painful pricks.
As an E-rank Jutsu, it has limited power and cannot pierce anything harder, having a short range, and is unlikely to cause any significant injury, just minor ones only.
After reading both scrolls, Kaiji said, "I was thinking of only focusing on Chakra Scalpel Jutsu practice for remaining day today but these Doton Jutsu are very simple.
If I practice them a day straight, i might be able to learn them easily."
After some more thought, he decided to focus on learning these E-rank Doton Jutsu for today.
While from tomorrow, his most focus would be on those two Healing Jutsu he had chosen, with morning training for Seven Heavens Breathing Activations.
Any remaining free time would be dedicated to Fuinjutsu learning for the next two weeks—
Which he estimated would be enough to learn Medical Ninjutsu techniques to a usable level.
With this decided, he started to practice for Earth Armor Jutsu.
Growl!
"Let's have lunch first!"
While practicing, he was in deep focus and didn't even realize he was hungry.
...
After having a simple lunch and Dango as snacks, he resumed his training.
For the next few hours, he practiced performing Earth Armor Jutsu.
As expected, it didn't make any visible armor, but just a subtle hardening of the outermost skin part where he focused chakra for this Jutsu on.
With hours of continuous practice, he was able to use this Jutsu properly.
Before moving to Earth Needle Jutsu, he used this Jutsu once more.
He made the hand signs and focused his chakra on his forearm.
A dull, almost imperceptible grayish sheen appeared over his forearm, making it look slightly tougher and denser.
To check its effects, he took out a kunai and tried to lightly penetrate his right forearm.
"It didn't work, let's increase force."
With light force, it didn't impact.
Then he used more force, and as a result, the subtle hardening from his forearm broke and injured him slightly.
"Hmm, this is just a better version of Chakra Enhancement but mostly for defensive purposes,"
He thought, comparing it with normal chakra coating or Chakra enhancement, which usually is for offensive Taijutsu strikes.
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