The most dangerous room in Konoha was not the interrogation chamber of the ANBU, nor was it the final stage of the Chunin Exams.
It was the living room of the Senju Main House, currently occupied by the Wedding Planning Committee.
Nanami Kento stood in the doorway, holding a tray of tea. He wore his usual relaxed grin, but his eyes darted around the room, assessing threats.
"I was thinking," Nanami ventured, stepping into the lion's den. "For the cake. Perhaps a three teir? Something light? We don't need a monument."
Three heads snapped toward him.
Mito Uzumaki, the matriarch. Kaede Senju, the mother of the bride. And Haruka Nanami, the baker.
The pressure in the room spiked. It wasn't chakra; it was pure, unadulterated judgment.
"Simple?" Haruka scoffed, waving a fabric swatch that was arguably pink but which she insisted was 'Sakura Dawn'. "Kento, this is the union of the Senju and the Nanami! It needs to be grand! It needs to be a statement!"
"The cake will be five tiers," Kaede declared, scribbling furiously on a scroll. "With sugar-work dragons. Can we make sugar dragon look appetizing?"
"I can enchant them to move," Mito suggested calmly.
"Please do not animate the dessert," Nanami interjected. "The guests will be terrified."
"Kento-kun," Kaede said, her voice dripping with a terrifying sweetness. "Why are you still here? Didn't we tell you to go... be a ninja somewhere? Go throw a shuriken. Go meditate on a mountain. Just get out of the kitchen."
Nanami looked at the three women. He looked at the piles of fabric, the scrolls of guest lists, and the diagrams of flower arrangements that looked like battle plans.
"I know when I am outmatched," Nanami raised his hands in surrender. "I am retreating. Tactical withdrawal."
"And don't come back until dinner!" his mother shouted.
Nanami slid the door shut. He let out a long breath.
"Scary," he muttered to himself.
He walked through the compound. In the training yard, a different kind of chaos was unfolding.
ARIA stood in the center of the grass. She held a wooden sword in one hand, looking bored.
Circling her were two children.
Nawaki Senju, holding a practice blade with both hands, his face a mask of determination. And Kushina Uzumaki, her red hair tied back, her fists clenched.
"Come on," ARIA taunted lazily. "My battery is draining just standing here. Attack me."
"YAAH!" Nawaki charged, swinging the sword.
ARIA didn't move her feet. She simply tilted her sword, deflecting Nawaki's strike into the dirt. "Too wide. You swing like a lumberjack."
"Dattebane!" Kushina shouted, rushing in from the flank. She didn't have a weapon; she threw a punch.
ARIA caught the fist with her free hand. "Better. But you telegraph your anger, Little Pepper. A ninja must be a stone until the moment they strike."
She gently tossed Kushina back. The girl landed on her feet, skidding in the grass.
Nanami watched from the walkway, leaning against a pillar.
"You're enjoying that," Nanami called out.
ARIA looked over. "I am merely fulfilling my directive. 'Protect the family.' Training them to not die is the most efficient form of protection. Plus, throwing children is surprisingly therapeutic."
"Kento-niichan!" Nawaki waved. "Watch this! I learned the Leaf Spin!"
"Show me," Nanami encouraged.
Nawaki spun. Ideally, it was a low sweep. In reality, he got dizzy halfway through and fell over.
"Magnificent," Nanami clapped. "A technique designed to confuse the enemy with pity. Very advanced."
Kushina giggled, helping Nawaki up. She looked at Nanami with wide, violet eyes. Since he had welcomed her on the first day, she had stuck to him like a burr whenever Tsunade wasn't around. He was the only one who are not from Senju household who didn't treat her like a strange foreigner.
"Are you going to train too?" Kushina asked.
"Not today," Nanami said. "I have some internal maintenance to do. Keep working on your form. ARIA, try not to bruise the merchandise before the wedding."
"I make no promises," ARIA shrugged.
Nanami's Room - The Nanami Residence
Nanami sat on his bed, shirtless.
The room was quiet. The blueprints for his inventions were neatly stacked. The bone brush sat in its case.
He looked down at his chest.
His skin was smooth, hardened by years of Ten and gravity training. But it was a blank canvas.
"Tsunade stores her chakra in the Strength of a Hundred Seal on her forehead," Nanami mused, tapping his sternum.
He picked up a jar of chakra-conductive ink. He didn't use the brush. He dipped his finger into the ink.
"I need a dual core."
He began to draw directly onto his skin.
He started in the center of his chest, right over the heart.
He drew a circle. Inside the circle, he drew a spiral. But unlike the Uzumaki spirals which coiled inward, this one coiled outward, then split into two distinct paths.
One path traveled up toward his throat—the center of communication and breath. This was the Sage Valve. It was designed to store and filter Natural Energy.
The other path traveled down toward his navel—the center of physical stamina. This was the Chakra Valve. It was designed to compress and store his own massive reserves.
"Yin and Yang," Nanami whispered, the ink glowing as it bonded with his skin. "Heaven and Earth."
The logic was complex. He was building a battery that could hold two volatile substances without letting them mix until he commanded it.
If he mixed them inside the seal, he would turn to stone. They had to be stored separately, like binary liquids in a bomb, only mixing at the moment of ejection.
He closed his eyes. He began to mold chakra.
He pushed his excess energy into the lower spiral.
It felt like swallowing a heavy stone. The seal drank the chakra, darkening from black to a deep blue.
Then, he opened the Sage Valve. He drew in a breath of Natural Energy—not enough to enter Sage Mode, just a sip.
He pushed it into the upper spiral.
The seal turned green.
"Stability: 100%," Nanami noted, feeling the heavy, hum of power sitting on his chest.
It wasn't a diamond like Tsunade's. It looked like a stylized, tribal tattoo of a twin-headed dragon curled around a sun.
"The Twin-Core Seal," Nanami named it. "Backup power for a rainy day."
He put on a fresh shirt, buttoning it up to hide the mark.
He checked the time.
"14:00. The Hokage requested a meeting."
He grabbed his flak jacket—he rarely wore it, preferring casual clothes, but a summons to the Tower required uniform—and left the house.
The Hokage Tower
The office was filled with smoke. Not from fire, but from Tobirama's pipe. The Second Hokage had taken up smoking recently, a habit he claimed helped him tolerate the Council.
Nanami knocked and entered.
"You called, Sensei?"
Tobirama sat behind the desk.
"Sit, Kento."
Nanami sat. He noticed a file on the desk with his name on it.
"I have a request," Tobirama said, putting the pipe down. "The Academy graduation is approaching again. I want you to take a Genin team."
Nanami blinked. "A team? Me? My operational profile is solo infiltration and asset destruction. Teaching three twelve-year-olds how to throw kunai seems... inefficient."
"It is necessary," Tobirama countered. "You have mastered every jutsu I have taught you. You have invented things I couldn't dream of. But you lack one thing: Legacy. A ninja is not just his strength; he is what he leaves behind."
Nanami leaned back. "Legacy is heavy. I prefer traveling light."
"You are getting married," Tobirama pointed out. "You are putting down roots. It is time you watered them."
Nanami sighed. "Fine. But not now. After the wedding. If I take a team now, Tsunade will kill me for missing cake tastings because I was busy saving Genin from cats."
Tobirama smirked. "Agreed. After the wedding."
The Hokage leaned forward, clasping his hands. The atmosphere in the room shifted. It became heavy, serious.
"There is another matter. A more important one."
Nanami straightened up. "Is it the barrier team? Did the seals leak again?"
"No," Tobirama shook his head. "It is about the chair."
He tapped the desk.
"I am tired, Kento."
Nanami looked at his master. He saw the tremor in Tobirama's hand that he tried to hide. He saw the grey pallor of his skin.
"The ambush," Nanami said quietly. "The damage was deeper than the tags could fix."
"The tags saved my life," Tobirama said. "But they could not reverse the years of strain. My chakra network is degrading. I can still fight, but I cannot rule. Not with the energy this village demands."
"You want to abdicate."
"I need to name a successor. A Third Hokage."
Tobirama looked Nanami in the eye.
"I considered you."
Nanami raised his hands instantly. "Absolutely not. I decline. I refuse. If you draft me, I will desert."
Tobirama chuckled. "I knew you would say that. You hate paperwork more than I do. And you value your freedom too much."
"I value my sanity," Nanami corrected. "The Hokage is a glorified desk clerk who occasionally fights. No thank you. I prefer to be the guy the Clerk calls when he needs a someone punched."
On one side, he saw Hiruzen Sarutobi, his face flushed with a perverted grin, peeking into the women's bathhouse alongside a giggling Jiraiya, both scribbling furiously in "research" notebooks.
On the other side, he saw Danzo Shimura, standing on a podium with a strange orange tint to his skin and a bad comb-over, raising a fist and shouting, "We will make Konoha great again!"
Nanami shuddered physically. The pervert or the tyrant. What a choice.
"No," Nanami said, shaking the nightmare away. "I am out. And I don't think Hiruzen or Danzo are good candidates."
Tobirama raised an eyebrow. "Explain."
"Hiruzen isn't decisive enough to make key decisions," Nanami stated bluntly. "Don't get me wrong, he will sacrifice himself for the village and his comrades in a heartbeat. But that isn't enough to make a village run. He wants everyone to be friends. He won't cut out the rot."
Nanami leaned forward.
"And as for Danzo... there is too much darkness in him. He will think of Konoha as his personal army to do whatever he wants. He doesn't care about others' feelings or the diplomatic fallout. His leadership will breed resentment in the other clans. You'll have a civil war within a decade."
Tobirama nodded slowly. "Your assessment mirrors my own fears. Hiruzen is too soft. Danzo is too hard."
"Then who?" Tobirama asked. "There is no one else ready."
"There is one," Nanami said.
"Who?"
"Kagami Uchiha."
The room went cold.
Tobirama stared at Nanami. His face darkened—not with anger, but with a deep, ingrained wariness.
"An Uchiha," Tobirama whispered. "On this seat?"
"Kagami is your student," Nanami argued calmly. "He has the Will of Fire. He saved your life in the war just as much as others did. He is kind, he is loyal, and he is strong. He possesses the Sharingan but is not cursed by hatred. He is a Kage-level powerhouse, the strongest of your students besides myself."
"He is an Uchiha," Tobirama repeated, standing up and walking to the window. He looked out at the village. "The clan is... volatile. Madara proved that. If I give an Uchiha the supreme power, will the clan submit? Or will they think they have finally conquered us?"
"That is exactly why you should do it," Nanami said, standing up and joining him at the window.
"Explain."
"Sometimes, Sensei," Nanami said softly, "you should give power to the strongest clan just to see what they will do with it. If you keep them at arm's length forever, you create the very enemy you fear."
He looked at Tobirama.
"Don't worry about Kagami-sensei. He has a good heart. He cares about the village above the clan. He will make sure the clan members behave. And if a few members of the Uchiha start acting up..."
Nanami smiled. It was a cold, confident smile.
"I will be there to support him. I will handle the outliers."
Tobirama looked at his disciple. He saw the golden light deep in Nanami's eyes.
"You would fight for him?"
"I would fight for the peace," Nanami said. "Kagami represents unity. If he takes the hat, the Uchiha can no longer claim they are oppressed. It removes their primary political weapon."
Tobirama turned back to the window. He looked at the Uchiha district in the distance.
He thought of Madara. The monster who tried to burn the world.
He thought of Kagami. The boy who shared his rations with his teammates. The boy who jumped in front of a lightning bolt to save Danzo.
"I will... think on it," Tobirama said finally.
It wasn't a yes. But it wasn't a no.
"Think on it, Sensei," Nanami said, stepping back. "Kagami has the heart. You just need to give him the hat."
"You are dismissed, Kento."
"Yes, Lord Hokage."
Nanami walked down the stairs of the tower. He felt lighter. He had planted the seed.
If Kagami became Hokage, the Uchiha coup might never happen. Itachi wouldn't have to slaughter his family. Sasuke wouldn't be an orphan.
Butterfly effect, Nanami thought. I just flapped my wings.
He stepped out into the evening sun.
He had a wedding to prepare for. A student to find. And a village to protect.
But for now, he was just going to go home and bake a cake.
Because even monsters needed a hobby.