However, what Uchiha En didn't expect was that this Magpie was the first animal to change, and also the last.
None of the subsequent animals showed signs of "revival," so naturally, they couldn't become stronger.
After absorbing the Dragon Vein Chakra, this Magpie was actually able to refine its own Chakra, and its size gradually increased.
Only three days have passed since it was revived until today, and the Magpie has grown from the size of a palm to the size of a Crow.
Moreover, the Magpie's changes were not limited to its size; the shape of its claws and beak changed, making it look more aggressive, and its feathers began to fall out, replaced by new ones that were silver-gray.
The fundamental reason for the Magpie's metamorphosis was the Dragon Vein Chakra. A few days ago, after the Magpie saw Uchiha En injecting Dragon Vein Chakra into dying animals, it kept pestering Uchiha En for Dragon Vein Chakra.
Uchiha En was initially reluctant, but Asana Hyuga suggested that he could try giving the Magpie more Chakra, as it might lead to other changes.
Thus, Uchiha En no longer hesitated and gave the remaining Dragon Vein Chakra in the scroll almost entirely to the Magpie.
After the Magpie received more Dragon Vein Chakra, its size grew significantly again, with its wingspan nearly reaching one meter. The Magpie had changed so much that anyone who saw it would mistake it for a Small Hawk.
"En, this bird is quite intelligent, and it possesses Chakra. It looks like it will continue to grow in size. I think it could serve as a Flying Summoned Beast. Do you want to try signing a summoning contract with it?" Asana Hyuga suggested.
"Sign a summoning contract with it?"
"Yes, I remember Orochimaru-sensei said that flying Summoned Beasts are quite rare in the Ninja World."
"But I don't have the scroll for a Summoned Beast contract!"
"Ryūchi Cave has spare scrolls; we can just borrow one." After saying this, Asana Hyuga performed hand seals and used the Summoning Technique to summon a Gray Snake. After some communication with it, the snake spat out a brand new scroll.
"Thank you, Little Gray. I'll bring you something delicious next time we meet."
The Gray Snake flicked its tongue, then vanished in a puff of smoke.
"Done. Next, we need some blood from this little fellow." After speaking, Asana Hyuga held down the Magpie, used a Kunai to cut its wing, and dripped a drop of its blood onto the summoning scroll.
The Magpie's blood slowly merged with the scroll. Once the Magpie's blood was completely absorbed by the scroll, Asana Hyuga said, "En, this scroll is a backup Summoning Contract scroll from Ryūchi Cave; it hasn't been used yet.
The Magpie has already left its blood on this scroll. Next, you just need to leave your blood and name on the summoning scroll, and you can summon it using the Summoning Technique." After speaking, Asana Hyuga handed the summoning scroll to Uchiha En.
Uchiha En took the scroll and left his blood and name on it.
He then deliberately released the Magpie, allowing it to fly far away.
After confirming the Magpie had flown far away, Uchiha En formed hand seals and used the Summoning Technique to summon the Magpie.
The experiment was successful; the Magpie flew out from a cloud of white smoke.
"Sure enough, this little fellow has the potential to become a Summoned Beast. Congratulations, En, you now have your own Flying Summoned Beast." Asana Hyuga said with a smile.
"Asana, aren't you going to sign a contract with it?" Uchiha En asked.
He remembered that in the original work, after Sasuke signed a contract with Ryūchi Cave, he also contracted the Hawk from Team Taka. Asana Hyuga should also be able to contract the Magpie.
"I don't need to. For now, having the Summoned Beasts from Ryūchi Cave is enough for me. If I need one later, I'll come find you."
Uchiha En nodded upon hearing this and didn't ask further.
Over the next few days, Uchiha En and Asana Hyuga began teaching the Magpie how to use Chakra.
A qualified Summoned Beast must be able to use Chakra for attacks.
During the training process, for ease of address, Asana Hyuga gave the Magpie the name Lightning.
Lightning's intelligence grew quickly, and it was now equivalent to a child around 10 years old.
Therefore, Lightning's learning of Chakra was relatively smooth.
After Lightning learned to use Chakra, an attack method unique to Lightning awakened, similar to Manda's Snake Venom or Katsuyu's Acid.
Lightning's innate talent was Wind. After learning to use Chakra, he could emit Wind Blades simply by flapping his wings.
Initially, the power of the Wind Blades was not strong, comparable to a C-rank Wind Release Ninjutsu released by an average Genin.
Later, as Lightning became familiar with this innate talent, he was able to continuously release more than a dozen Wind Blades.
The power of the Wind Blades was strong enough to leave white marks on a large rock.
Coupled with Lightning's ability to fly, he should now be stronger than an average Genin.
Of course, Lightning's existence is not just for combat; Flying Summoned Beasts are mostly used to assist their masters in battle.
"By the way, En, have you tested Lightning's Chakra Nature?" Asana Hyuga asked.
"No, isn't its Chakra Nature Wind?"
"Wind Blade should be Lightning's Innate Skill, just like how the snakes of Ryūchi Cave all use Venom. Its Chakra Nature might not be Wind, or rather, it might not only be Wind."
Uchiha En nodded, pulled out a Chakra Paper, and had Lightning inject Chakra into it. The Chakra Paper first wrinkled, then was cut into two halves.
"Wind and Lightning? That's truly a suitable nature for a bird," Asana Hyuga said after seeing the Magpie's nature.
Uchiha En also nodded: "Indeed, Wind and Lightning natures are very suitable for birds. The effect of releasing Wind Release and Lightning Release in the air is much stronger than on the ground."
Furthermore, Lightning Release can stimulate cells and increase movement speed. For birds, increasing flying speed is also very important, and perhaps later it can..."
"En, Asana, there you are! Hurry! Hokage-sama is looking for us!" Yamanaka Teruzuki, who had rushed over, interrupted their conversation.
Uchiha En and Asana Hyuga exchanged glances, realizing that a new mission must have arrived.
Calculating their time, they had been back in the village for about 20 days; it was time to depart.
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