Fujin asked Renjiro, "Where and how are those Elemental Crystals produced?"
Renjiro sighed and said, "You seem to be fixated upon this. Alright, I'll explain everything about it.
Elemental crystals are mined from crystal veins. Hundreds of years ago, these lands were full of such veins. Actually, the way the lands were named was based on which types of veins were most abundant in those areas. For instance, the Land of Fire was abundant in Fire Crystal veins.
The Elemental Crystals provided huge help to ninjas. So they were mined extensively. Around a hundred years ago, all veins began drying up.
From what I have heard, the drying of the veins caused conflicts to intensify during that period, as everyone began fighting for it.
By the time the 5 great villages came into existence, all the veins had been used up and destroyed. However, even after they were destroyed, the lands still kept having more ninjas with similar affinities. Lord Second did research regarding this and concluded that the environment of Land of Fire is such that the ninjas here have a good affinity to Fire manipulation. Same for the other four villages as well.
As for the Crystal veins, only one place still had some low-quality veins. That is the current Land of Iron.
In order to prevent another war from happening for them, Lord First temporarily protected it. The Daimyos soon reached a deal, and the Land of Iron became a neutral country without any ninjas who could use those crystal veins. Instead, the Land of Iron will mine a limited amount and sell a certain amount of it to each village.
So, all the Elemental crystals today are received from the Land of Iron. And it is received in very low quantities. Most of those Elemental crystals are distributed among the clans. The rest is kept by the Hokage and is used to train the Anbu.
Additionally, because their quality and quantity are low, they are only used alongside proper Fuinjutsu seals to be able to use 100% of those crystals."
Fujin digested all this information. He analyzed, 'Oh, guess it isn't as useful as I thought then. Without sufficient quantities, they won't be that useful.'
[A/N : Elemental crystals will play a huge role in one arc in the future (or maybe more if I get more ideas). But it won't create a huge impact on the story. I do have some good ideas with this, but if I overdo it, it might not be Naruto anymore, lol.]
Fujin asked, "Does the effect of each crystal depend on our affinity?"
Renjiro nodded, "Yes. It works best with your affinity. Did you check all 5 rooms?"
Fujin nodded. Renjiro replied, "Good. The chakra paper used to test your affinity only shows your strongest affinity unless you have an elemental Kekkei Genkai. But trying to absorb energy from Elemental crystals too can tell you your affinities. What was your absorption rate for other elements compared to Wind?"
Fujin replied, "It was around 35% for Fire. Around 6% for Earth. And 0 for Water and Lightning."
Renjiro appeared disappointed on hearing that. He sighed, "Seems like you don't have much affinity for other elements."
Fujin acted disappointed and asked, "What should it have been for me to have their affinity?"
Renjiro explained, "If you have any element at 70% or above, then that can be considered as your secondary affinity. Your Wind element affinity is quite strong. So most likely any element above 50% could have been considered a secondary affinity.
As for Tertiary affinity, it needs to be 30% or above. Your Fire element qualifies for this. But I would recommend you to not waste your time on it. After all, it is extremely rare for a squad in Konoha to not have someone with Fire affinity."
Fujin nodded. Renjiro continued, "Even your Earth manipulation. I would suggest you stop it after learning Earth Wall jutsu. Focus entirely on your Wind manipulation. Make it as strong and lethal as you can."
Fujin replied, "Yes Sensei."
Renjiro said, "Good. Now, let's get back to your training for the month." Fujin paid attention with some excitement. Training with Renjiro proved to be extremely fruitful.
Renjiro chuckled and said, "Actually, I have nothing more to teach you. I have already taught you all the basics that I could. Rest would require hard work from you to improve further."
Fujin gave his sensei a deadpan look. He asked, "So what will be training for this month sensei?"
Renjiro smirked, "We will be doing live combat practice!" Fujin felt a chill down his spine on looking at his sensei's smirk.
Renjiro continued, "Every time you spar or fight, you hide behind your clones. While that is a good strategy, and I admire the fact that you have managed to pull it off so successfully, you have missed out on an essential fighting experience that you will need in the future.
So, for this entire month, we will do live combat drills. You can use your clones, but I will still attack your main body. By the time this month ends, I will let you experience everything that you would have to face during missions."
Fujin nervously said, "Alright Sensei." As soon as he said it, Renjiro attacked him with a punch. But Fujin, who was on alert due to Renjiro's smirk, flickered away in the blink of an eye! Renjiro smirked and flickered as well.
The Evening before the Tournament -
Fujin laid in the training ground, breathing heavily. If anyone were to see him, they would wonder, 'How many people beat him up?'
He was bruised all over and had completely exhausted his chakra. Renjiro walked over to him and said, "Ready for the tournament?"
Fujin looked at him while screaming internally, 'You know what? Fuck the child activists! Where the fuck are the human rights activists? In my previous life, if anyone leaked even a minute of my combat drills with this monster, the media would all create havoc for weeks! There might even be public protests against him! I didn't even get a break on my Birthday! Bastard made me eat punches and kicks instead of cake!'
Unfortunately, Fujin had neither the energy nor the courage to talk back to Renjiro. Renjiro chuckled, lifted Fujin, and put him on his shoulder. He said, "Well, you can't fight in this state. Let's get you to the hospital to fix you up."
Fujin didn't reply or struggle. In the last month, he was carried in this manner to the hospital 11 times! He had received all sorts of weird looks. Any sense of embarrassment was long dead and buried.
On reaching the hospital, the medic-nin healed him as usual and asked him to sleep in the Hospital.
While going to sleep Fujin thought, 'No wonder all adults in this village are so shameless. It seems that they all had their sense of shame beaten out of them.'
[A/N - Tournament from the . It's really hard to find the motivation to write fights that don't involve Fujin, lol]