The third category had the Kekkei Genkai which seemed even more complicated and somehow had an effect on the user's body, increasing their difficulty level exponentially. Fujin included Swift Release, Steel Release and Dark Release in this category.
For Fujin, whose highest talents were in Wind and Lightning Manipulation, Swift Release should have been the easiest Kekkei Genkai to learn. However, unlike the Scorch Release where Fujin had limited success, he didn't make any progress whatsoever towards Swift Release.
Fujin could use Wind as well as Lightning to increase his speed. Despite that fact, he didn't even manage to conceptualize how to merge those two elements and create Swift Release.
It was the same for Steel Release and Dark Release. Unlike the Swift Release, Fujin didn't even know which elements were involved in creating those two Kekkei Genkai. The Konoha Library wasn't much help either. Fujin did have his own estimates, but he wasn't sure.
The fourth category included the Kekkei Genkai which were impossible to replicate by anyone without the bloodline. Those included all the Sharingan and its forms, Byakugan and its forms, Ketsuryūgan and Shikotsumyaku.
There was no way for Fujin to learn or create these Kekkei Genkai. He could still use the Doujutsus by stealing and transplanting the eyes, but he didn't see any way to replicate Shikotsumyaku.
In addition to these four categories, there were still a few more Kekkei Genkai about which Fujin didn't have any clear information. In fact, most of the ninja world didn't have much information about it due to how rarely they appeared.
They included Typhoon Release, Mud Release, Ranmaru's Kekkei Genkai, Jugo's Kekkei Genkai, Sakon and Ukon's Kekkei Genkai, Kurama Clan's Kekkei Genkai, Crystal Release and perhaps a few others.
Some of these were relatively easier. For instance, Mud Release could have been placed in the first category if there was more information on it as it was very easy to explain how to create Mud by combining Water and Earth Release.
Typhoon Release would have been easier as well if Fujin knew which elements merged to form it. Fujin speculated that it was a combination of Wind and Yang Release but wasn't sure. In addition, the effects of Typhoon Release didn't seem too different from Wind Release. Fujin could already replicate its effects with his normal Wind Release.
Crystal Release would have possibly been in the second category if Fujin knew which elements were involved. By comparison, Ranmaru's Kekkei Genkai and Sakon and Ukon's Kekkei Genkai were much more complicated. Fujin would place them somewhere between the Third and Fourth Categories if he knew more about them.
On the other hand, Jugo's Kekkei Genkai and Kurama Clan's Kekkei Genkai were strange. Kurama Clan's Kekkei Genkai was an extreme stage of Genjutsu. Though extremely unlikely, Fujin felt that even a normal ninja who was extremely talented in Genjutsu could eventually reach that stage without needing the bloodline. Similarly, Jugo's Kekkei Genkai was just an inferior form of Senjutsu. Anyone who learnt Senjutsu would be able to exceed them. So, Fujin wasn't sure whether it would be appropriate to call them Kekkei Genkai.
Fujin thought, 'Even though I can merge Fire and Wind to an extent, I can only do so out of my body. It is more of a combination jutsu rather than a Kekkei Genkai even though I can replicate some features. A true Kekkei Genkai should merge the elements even before they are released from the body. Though it seems the same, doing so will cause a qualitative change.
After all, Lava Release users directly spit out Lava from their mouths instead of first melting rocks and creating lava from it. If they had to do the latter, then they would be a laughing stock in the ninja world instead of being a terror for weaker ninjas.
Unfortunately, no matter how much I thought, I couldn't get that merger to happen inside my body. Luckily, I now can observe someone who can use the Scorch Release. It might just be what I needed for a breakthrough in this aspect.'
A smile appeared on Fujin's face. He muttered, "I need to meet those kids tomorrow. Let me see what those Kekkei Genkai look like from a close distance."
The next day, Fujin woke up early as usual and completed his morning training routine. He decided to not train Spirit Transformation jutsu that day. Instead, he created a few dozen clones who continued working on the Fuin Battlefield. Meanwhile, he walked towards the training facilities where the Anbu were training the kids and silently observed everyone. A few people saw him but no one disturbed him.
For the next half an hour, Fujin just observed them. A peculiar expression appeared on his face as he realized, 'Hmm, they aren't as emotionless as I expected them to be… or rather, many of them are just pretending to act like they are emotionless without actually being emotionless. In fact, they even have friends. Did Danzo grow soft?'
Fujin didn't need to think to know what the answer to that question was. He thought for a bit and soon realized what he was missing, 'I see. I nearly forgot about it. During the initial phase, Danzo promotes friendship between the Root trainees. Only after they kill their best friend would they be considered emotionless enough to be able to become a full-fledged Root ninja.
Since this step wasn't completed, these kids aren't completely emotionless. Of course, they aren't completely normal either. However, that should be the result of a messed up childhood along with spending a year or more in the Root. As for why they are pretending to be emotionless, that should be Root's teachings plus them trying to follow the examples of Root's instructors.
Sigh, I should sponsor some therapists and maybe create a business from that. There is little doubt that it'll be one of the most lucrative businesses in this bloody world. Though I guess it'll quickly be hijacked and used to increase brainwashing.
Anyway, this is rather good news. Since Root didn't completely break them, these kids should recover in time. It'll also make it easier for Naruto to influence them. I need my prankster ninja army soon to ease my boredom!'
Fujin suddenly flickered and appeared behind an Anbu Captain who was in charge of training the kids who had Kekkei Genkai. The startled Anbu Captain, wearing a monkey mask, quickly turned around only to hear, "I'll take over these kids for now."
Seeing Fujin standing behind him, he nodded and moved away. The 5 kids looked at Fujin curiously. Though Hiruzen had informed them about Fujin several times and introduced him last night, they had never interacted with him. They all were curious about the person the Hokage spoke so highly about.
Fujin looked at them as well. Among the 5 kids, 2 were girls and the remaining 3 were boys. Their ages were in the 7 to 10 years range. Seeing them observing him, Fujin asked with a chuckle, "So, will you guys introduce yourself or should I guess your names?"
Hearing Fujin's questions, the kids immediately began introducing themselves.
"I am Hikari", said a 9-year-old girl with long, flowing black hair. Her eyes sparkled with curiosity, and she wore a cheerful smile while introducing herself.
"I am Takeshi", said a 9-year-old boy with messy blond hair and sun-tanned skin, radiating a calm demeanor, his blue eyes reflecting a sense of maturity beyond his years.
"I am Yuji", said a 9-year-old boy with spiky white hair and dark skin. He exuded boundless energy as he constantly fidgets, his eyes gleaming with a mischievous glint.
"I am Shoma", said a 7-year-old boy who looked reserved and shy. He had sleek black hair, and his fair skin hid beneath his quiet demeanor.
"I am Sayaka", said a 10-year-old girl who looked confident and prideful. She boasted shoulder-length black hair that framed her determined face, and her fair skin complemented her assertive personality.
Fujin heard their names and thought, 'Hmm, none of them mentioned their family names… I guess Hiruzen instructed them to do so to avoid attracting obvious suspicions. Oh well.'
Fujin smiled and said, "Good names. Lord Hokage spoke quite fondly of you 5. Follow me. I'll see what you have learnt so far."
Fujin turned around and began walking outside as the kids followed him with curiosity. They also attracted the attention of other kids. Seeing that Fujin was leaving the training facility, the Monkey-masked Anbu captain flickered next to him. He had heard what Fujin had said and became worried that Fujin might accidentally expose their abilities.
He said softly, "Lord Hokage advised against letting them fight in the open."
Fujin nodded and said, "I know, don't worry."
Fujin led the 5 kids out and entered the Training Ground opposite his house. Fujin had long placed seals throughout the training ground. So, there was no worry about anyone other than Hiruzen spying. In addition, since he became a Council Member, others stopped moving through that Training Ground as well.
The only one who would frequently visit the Training Ground was Naruto. However, Naruto was being put through the grinder by Kakashi. Kakashi gave his 'energetic' students no break and put them through training of similar intensity for the second day as well. Despite their bodies being extremely sore and aching everywhere, the three Genins dragged their feet afraid of the fearsome Thousand Years of Death jutsu!
So, there wasn't any chance of anyone intruding on the training ground unless Hiruzen sent a messenger. Fujin stood opposite the 5 kids and said, "Come at me with all you got. Don't hide anything, including your Kekkei Genkai."
