With no access to his Ninjutsu, Renjiro found himself with limited options for combat. His usual avenues of Genjutsu and Taijutsu were not as effective against a giant Eagle like Uno.
He was certain Uno would not let him get close enough to use his Taijutsu, and while he could still use his Genjutsu through the Sharingan, the amount of chakra required to entrap such a massive target would be tremendous. This only left Fuinjutsu as his last resort.
With a plan already in place, Renjiro only had to implement it. Out of the stockpile of seals he always carried, only two types would be effective in this situation which were, Explosive Seals and Chakra Drain Seals.
Though they seemed simplistic, these seals were modified with a resonator component. This addition packed more power at the expense of control. His Chakra Drain Seals were more potent than those Kushina had accidentally used on him, capable of holding down a Jounin.
'From What I have seen, she is more powerful than any jounin from Konoha so I'll have to use all the chakra drain seals I have on me.'
Fortunately, Renjiro didn't just have one seal, he had hundreds of both types. He had been saving them for a rainy day, and with this being his last trip to find a summoning, Renjiro decided to go all out and use them all.
'The only issue is how do I activate them since I need chakra to do that.'
Renjiro's mind raced as he dodged another lightning bolt from Uno.
Despite his connection to his chakra reserves being disrupted, Renjiro remembered an alternative way to access chakra, his blood.
During his Fuinjutsu classes with Kushina, she mentioned that the Uzumaki clan could use their blood as a substitute for chakra ink due to their strong life force.
Although Kushina had promised to teach him this technique, Renjiro had already started experimenting, especially after discovering his improved healing abilities during the Magatama process. He concluded that his blood might contain traces of chakra.
While Renjiro had never succeeded with this before, he still decided to take the risk.
'What do I have to lose?' he thought. 'Only this battle and the chance to get an eagle as a summon. I can still make more summoning seals and look for another animal to turn into a summon.'
With a plan in mind, Renjiro began to implement it. While dodging Uno's attacks, he strategically planted explosive tags around the battlefield. His movements, though appearing random, were meticulously calculated.
After placing the explosive tags, Renjiro slowed down, using the opportunity to discreetly place chakra drain seals on Uno's feathers. With his Sharingan, this was easier than he expected. He needed to be precise and undetectable, and the Sharingan allowed him to see and predict Uno's movements with clarity.
'While she is powerful, it is clear that she doesn't know how to effectively wield her power.' Renjiro commented on Uno's fighting style.
As Uno launched another lightning attack, Renjiro dodged. He reached into his pouch, pulling out a small kunai and slicing his palm open. Blood welled up, and he quickly sprinkled it on the seals he had prepared.
Uno, growing more frustrated, unleashed a high-pitched screech that disoriented Renjiro momentarily. He gritted his teeth against the sound, focusing on his task. He couldn't afford to lose focus now.
At the edge of the battlefield, Tenjin watched Renjiro closely. "Are you sure about this?" he asked Momo.
Momo nodded her head. "Yes, if the boy cannot survive this, then we are better off alone than having him as our summoner."
Back on the battlefield, Renjiro was sprinkling his blood on the seals he had strategically placed around the area.
'It works!'
As he did so, he noticed that his theory was spot on, what's more, he could even control the chakra in his blood to activate the seals. This was a huge revelation, making him essentially a living trigger for his modified seals. However, he realized that this control was only limited to activating seals and nothing more.
'I can control the chakra in my chakra, but I can't do the same with my reserves. Something must be wrong with my body. And I am sure the Eagle Momo knows why.'
He darted around the battlefield, dodging Uno's relentless attacks while sprinkling his blood on all the seals he had planted, including the one on Uno herself.
Uno, growing more frustrated, launched a barrage of lightning bolts. Renjiro, his stamina waning, narrowly avoided the attacks, his reflexes sharp despite his condition. He needed to finish this soon.
Renjiro finally finished setting his trap. He stood still, with a smirk on his face.
"Boom!"
'An explosion? But when? He has just been dodging my attacks.'
Uno tried to counter the explosion with one of her jutsus, but to her shock, she realized she could barely summon her chakra.
Panic set in for a brief moment, but she hastily flapped her massive wings, creating powerful gusts of wind to counter the explosion.
Renjiro's smirk widened as he watched her struggle.
"As expected," he muttered.
He had predicted that Uno would still have a chance against the explosion even with her chakra being drained. After witnessing what it was he decided to activate the remaining seals he had placed around the battlefield.
The seals erupted in a series of controlled explosions, and the chakra drain seals sapped Uno's remaining strength.
"Boom!"
The air filled with the sounds of more explosions and Uno's strained screeches as the blasts overwhelmed her defences, further weakening her.
Uno tried to muster another attack, but the chakra drain seals were too powerful. They sapped her strength rapidly, leaving her vulnerable. She struggled to stay upright, her massive form swaying as the series of explosions continued to assault her.
Tenjin, who had been watching from the sidelines, could no longer stand by. Ignoring Momo's potential wrath, he made a split-second decision.
'I need to save her!'
In a flash, Tenjin appeared in front of Uno, his powerful wings spread wide. With a mighty flap, he generated a gust of wind strong enough to deflect some of the explosions, protecting Uno from the brunt of the attack.
His presence was a protective barrier, a desperate attempt to shield his daughter from further harm.
Momo, watched the scene unfold with a stern expression. It was a grave misconduct, almost treasonous, for Tenjin to act without her command.
As the matriarch, she had ultimate authority over the actions and lives of the eagles.
While being the Matriarch's mate did not save him from their laws, Momo decided not to do anything as she knew Tenjin's actions were driven by a father's instinct to protect his child.
'She is also my child, and if she dies, our clan would be vulnerable. With my regressed form from egg-laying, Tenjin would be the strongest eagle around. It would reduce our chances of survival.' Momo reasoned.
Uno, still reeling from the explosions, tried to regain her footing with Tenjin's help.
"How...?" she asked.
"You were so focused on attacking that you didn't notice," Renjiro continued. "I turned your own aggression against you and planted my seals all over the battle."
'I guess this is Uno-reverse.' Renjiro inwardly chuckled.
"I concede," Uno said, her voice filled with a mixture of respect and resignation. "You have proven yourself, Renjiro."
She knew she had underestimated this human, and despite her frustration, she couldn't help but respect his cunning and resourcefulness. She finally lowered her head in a gesture of acknowledgement.
Momo's voice held a hint of approval as she spoke. "You have indeed proven yourself worthy, Renjiro. We would be glad to enter a summoning contract with you. Welcome to our clan."
Renjiro bowed deeply, his body still trembling with exhaustion but his heart filled with pride. "Thank you, Lady Momo. I will honour this partnership and the trust you have placed in me."
'Finally! Honestly, just the thought of repeating this whole process exhausted me!'
With the trials behind him and the summoning contract secured. Momo and he complete the required ritual with Renjiro using his blood while the Eagle used one of her feathers.
The contract was then finalized with Renjiro gaining information on how to perform a summoning ritual on the Eagles.
The contract they agreed on was the person-to-community which surprised Renjiro since it meant that they placed more trust in him than he expected. He was already contented with having either Tenzin or Uno as he was impressed by their strength.
It was then that Momo informed him that due to his still-growing chakra reserves, the only person that he would be able to summon was Uno, and that would cost him half of his reserves.
'I need to find a way to increase my chakra reserved to be able to summon more than one of these Eagles.'
Moreover, they had a fast growth rate so the cost of summoning Uno was bound to increase in the future. Fortunately, it would not be that much as Uno was close to maturity.
"Can I ask a question?" Renjiro asked once they finalised the summoning contract.
"Do ask, Renjiro," Momo said as they were on their way back to one of the caves in the mountain where they resided.
"When I fought Uno, I found that I could not access my chakra, I tried healing myself but nothing has changed. Was that an effect of Uno's attacks?"
"No," Momo shook her head, "It was your body's reaction after being exposed to Natural Energy on your way up the mountain. Don't worry, after enough rest, you will be able to access your chakra."
'Well, that is assuring.' Renjiro thought before asking
"Since you guys have access to Natural Energy can you guys teach me Senjutsu?"
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