Chojusen pricked his finger and used the blood the came out to sign his name on the Butterfly Summoning Scroll. He found it a bit ridiculous that he had to suppress his own yang vitality or the wound on his finger would heal before any blood came out.
With the scroll signed, Chojusen officially became contracted to the Butterfly Clan. Now, he could use various amount of energy to summon butterflies; the more energy he used the more powerful the butterfly he could summon.
[Host has learned the Skill: Butterfly Summoning
Butterfly Summoning (Rank A | MAXED): Use energy to summon butterflies from the Butterfly Clan.]
After Chojusen signed the scroll, the Butterfly Elder said "Other humans may not be able to fight with us at all, but if you really do come from the Akimichi Clan, it may just be possible…"
"Oh? I never really asked, but could you tell me why?"
"For the other beast clans, they all have practical uses for general ninjas. We are just butterflies, which is to say, we don't have the tracking abilities of dogs and wolfs, we can't transform into weapons like the monkeys, we don't have the physical strength of the tigers, lions, and bears, and we don't even have the healing abilities of slugs. For general ninjas, the most help we can give is scouting from the air.
But, if you have the talent, we can teach you a unique transformation technique. Our special transformation requires both perfect control over natural and spiritual energy (neutral chakra) and physical energy (yang vitality). As long as you can achieve that, you will be able to learn what the butterfly clan calls, Butterfly Sage Mode.
Our Sage mode is different from the other beast clans, as it requires unerring precision with regards to the physical energy. Not only do Butterfly Sages have the potential to enter Elemental Sage Modes, they are also considered the best at taijutsu. However, that is just an "if statement;" it all comes down to talent in the end."
"Oh? Well... how do we test my talent?"
"It's simple, just show me the highest degree of control you possess for both spiritual energy and physical energy."
Chojusen was still confused, so the Butterfly Elder just went through the list of chakra control exercises to see where Chojusen's level stood. Chojusen was told to run up trees without using his hands. He completed this exercise with no problems, even if he had never tried it before. Then Chojusen walked on water with just as much ease as tree walking.
Chojusen assumed the next step would be to walking on air, so he just used the principles of tree walking and water walking to walk in the air. It took him ten tries, but he managed to pull through. Needless to say, when the butterfly Elder saw Chojusen flying with only the support of his chakra, he verbalized a sigh; it was a sign of disbelief, but also one of hope.
Air walking had been theorized and attempted countless times in the past by other ninjas but Chojusen was the first person to actually achieved it. This act proved that Chojusen's spiritual energy control was "good enough" to attempt Butterfly Sage mode.
Next, the elder tested Chojusen's affinity for natural energy. Natural energy was just the energy from the environment, something Chojusen could manipulate as easily as his hands and feet. The butterfly elder didn't think that Chojusen could shocked him after he pulled off air walking; he was very wrong.
Chojusen thought that "natural energy" was something foreign, so he followed the Butterfly Elders instructions on how to sense it. The Butterfly Elder instructed Chojusen on how to sense natural energy as he would any other "novice;" he had no reason to think that Chojusen already knew how to manipulate natural energy.
Unlike the the toad clan that used oil to sense to help ninja's sense natural energy or the slug clan that used their slime, the butterfly clan used their wing's scales. The butterflies could shed their old scales on their wings and use them in a similar way as the toads' oil and the slugs' slime. To Chojusen, it looked like glitter was coming off the wings of the butterfly elder.
However, when his skin came into contact with the scales Chojusen felt the natural energy in the environment rush to the area the scales landed on. He said "Elder, is this natural energy you are talking about just the energy in the environment?"
"So you can feel it already?!"
Chojusen almost gave himself a facepalm, before summoning a titanic amount of neutral natural energy; it was so concentrated that the Elder can see it physically manifest. The Butterfly Elder started doubting his eyes. Chojusen wasn't pulling energy into himself, he was actually directly shaping the energy outside of his body; this was never done before, it was supposed to be impossible!
The Elder calmed down and just put this matter to rest; he wanted to keep his sanity. Chojusen had two of the three energy controlling proficiencies at the required level, that was enough to use the basic Butterfly Sage Mode with the help of a summoned butterfly.
Now, the moment of truth arrived! If Chojusen managed to reach the required level of physical energy control, he could learn Butterfly Sage Mode to completion. The elder walked Chojusen to a rocky mountain, and told him to test his physical strength. Chojusen punched a large hole into the side of the mountain and the elder properly gauged his strength for the final test.
The elder brought Chojusen to a large boulder; it was about 40 cubic meters in size. Chojusen was told to lift the boulder over his head and that as long as his physical strength allowed him to persist for longer than an hour, he would be a perfect candidate for Butterfly Sage Mode.
Chojusen lifted the boulder above his head, but lifting something so heavy quickly drained him of his stamina. With just his body's strength, he could only keep the boulder over his head for five minutes. He didn't know if using yang energy was cheating, so he asked the elder "Can I use yang techniques to recover my stamina? Otherwise, it won't last much longer."
"You even know yang techniques?!" The butterfly elder was extremely happy that his clan picked up such a precious gem. He said "What we are testing is your physical energy level, if you have means to increase it through the use of yang techniques, all I can do is raise a green flag. Just don't use earth energy to lessen the weight of the boulder."
Chojusen used his Yang Awakening Skill and was surprised to find it leveling up every couple minutes. With Yang Awakening, Chojusen could probably hold the boulder with his index finger indefinitely. He easily passed the physical energy test, leaving behind him a very emotional elder. With Chojusen, the Butterfly Clan would rise once again to prominence!
There had only been two Butterfly Sages in the past; the original creator of the butterfly clan, who was actually a demi-human, and the Akimichi Clan's progenitor, Chojusen's ancestor. The creator of the butterfly clan was actually a humanoid butterfly, and he was the only person to ever enter the true Butterfly Sage Mode.
Chojusen's ancestor also became a Butterfly Sage, but he needed the help of a butterfly to actually enter the Sage Mode. The reason he never became a true Butterfly Sage was because of the immense difficulty of having extreme amounts and control of physical energy. Even Chojusen didn't have the required physical energy in his normal state, he had to use his Yang Awakening Skill to constantly replenish his energy.
However, he realized that if he kept training by holding heavy objects like the boulder from before, he could improve his Yang Awakening Skill much faster than he could usually. As he kept improving his Yang Awakening Skill, he could dig out more and more potential from his body; he did after all have the system, which granted him unlimited growth.
Now that the Elder had concluded Chojusen's test, he took him back to the Butterfly Clan compound and began teaching Chojusen how to enter Butterfly Sage Mode. Chojusen had to fuse the natural energy of the environment with his internal energy and then use his physical energy as fuel to sustain the transformation.
Chojusen learned how difficulty it was to achieve Butterfly Sage Mode, as it took him over a day for the system to recognize the skill as complete.
[Host has learn how to use the new Forms: Sage Mode, Elemental Sage Mode, and Butterfly Sage Mode
Sage Mode (Rank A | 0/100): The user fuses natural and internal energy perfectly to enhance all aspects of their combat prowess. All attacks, be they physical or energy based are several times stronger. Current Effectiveness: All aspects of combat are tripled.
Elemental Sage Mode (Rank S | 0/100): The user fuses natural and internal energy that has been converted into elemental energy perfectly to enhance all aspects of the combat prowess. All attacks, be they physical or energy based are several times stronger. The user also gets enhancements based on the type of elemental energy used to fuel this sage mode. Current Effect: All aspects of combat are tripled + the user gains elemental buffs.
Butterfly Sage Mode (Rank SS | 0/100): The user fuses natural energy, internal energy, and physical energy perfectly to exponentially enhance physical prowess and energy based techniques. Current Effect: Physical stats increase by a factor of ten, energy based techniques increase by a factor of 5.]