This one is from Riddle_of_the_Sphinx from AO3: How about saving Obito?
Standing and stretching, Naruto looked at his sleeping bride. The sun's rays shone on her face, sleeping and at peace, her beautiful face framed by soft black waves. Smiling, he went into the kitchen. Humming quietly, the blond looked out the window as his mind drifted back to the day before. So many of their friends were there to support them in their union. Tsunade, Iruka, and…of course, Kakashi was there. Leaning forward, putting his chin on his hand, Naruto smiled. Kakashi looked simply…stunning in his clothing. That suit looked fabulous on him. Naruto's lips turned down in a frown. He should not be thinking like that. Naruto was married and Kakashi never looked at him like that anyways. That's why Naruto married Hinata.
Oh, he loved Hinata, very much…it's just…well, his first choice would have been Kakashi. However, Kakashi was attracted to no one, and definitely not Naruto. Hinata wanted to marry Naruto, was sweet and devoted, a great friend, and would do well as a life partner. Naruto wasn't an idiot…he didn't want to be alone his entire life. So…he settled on Hinata. It's what everyone expected, anyways. It was nice and comfortable. She would be a good life mate and a good Hokage's wife.
The knock woke him from his reverie. Going over to the door, Naruto opened it. A box was on the floor, wrapped in orange paper with a black ribbon. Stooping, he picked it up…it was heavier than it looked. Smiling at the coloring, he read the tag. "For Your Wedding." Sitting it on the table, he decided to wait until Hinata woke up. Going to get his tea, he blew on it, cooling it. Propping himself up on the windowsill, he looked out the window, his eyes drifting to the Hokage Tower. He thought he saw movement in the tower, but he was sure it wasn't Kakashi. It was much too early for him. Naruto's mouth lifted up in a smile. Suddenly, he felt Hinata's arms wrap around him as she rested her head on his shoulder. "Good morning." she whispered.
"Hey, morning." Smiling he pulled her into a kiss. Pulling away and twisting around, he motioned to the box. "We got another present. You wanna open it?"
Hinata shook her head no. "Those are your colors; I'll let you do the honors." Grinning, Naruto started undoing the ribbon. Opening the box there was a huge stench; Naruto almost vomited. Looking into the box, the world became slippery and it was hard to breathe. There was Kakashi's head, sightless eyes staring at his former student.
()()()
"We can't just stand here and do nothing!" Naruto's fists were at his side; he was shaking in anger, his face red. Hinata stood behind him, one hand on his shoulder to provide him support.
Tsunade sat at the Hokage's desk, reluctantly having been brought back as Hokage at the Sixth's demise. She still had the hangover from the wedding reception the night before. Shizune stood at her side, large dark eyes solemn. "I am not doing nothing, Naruto. However, I cannot run off half-cocked to find Kakashi's murderer. The village has been locked down and I have already sent out several ANBU to find any leads." Her hazel eyes shone with sadness and fatigue. "His body is being analyzed."
"I'm going! Kurama and I can find them!" Naruto's rage boiled over, tears pricking the corner of his eyes as the beast coiled in agitation inside him. Kakashi was Naruto's precious person…therefore making him Kurama's precious person to an extent, since Naruto was going apeshit nuts without the silver-haired sensei.
"You will do no such thing!" Tsunade snapped standing and slamming her hand on the desk, the wood groaning in protest. "I do not need you sacrificed as well because you run off all hotheaded! It may very well be exactly what the murderer wants!" Her hazel eyes glinted in warning.
"Naruto, Tsunade is right." Guy responded. His voice sounded dead. Naruto swung his head angrily to tell Guy his what fors, but stopped at the sight. Guy's brilliant smile was gone, his eyes dull, his body stooped. Rock Lee was staring at his former sensei in worry. "This is an attempt to get you off guard and not thinking straight. We do not know what they want, but it is likely you and the fox are a part of the plan. Kakashi would never…" Guy stopped as his voice broke and he looked away.
As voices kept speaking around him, Naruto felt suffocated. He heard various phrases, vaguely deciphering that the village was in complete lockdown and ANBU were being assigned to him and Hinata. Shaking his head, he shrugged off Hinata's hand and stormed out, hearing Tsunade's voice following him, "You aren't to leave the village, Uzumaki."
Naruto walked through the village, sightless, looking for somewhere to be alone. Hinata followed him for a bit. Finally, he stopped. "Hinata, just…go home. I need some time alone." He tried hard to not make his voice sound angry. Squeaking her approval, Hinata gave him a hug. Naruto returned it, kissing her temple before she scampered off. Walking aimlessly, he found himself outside of Hatake's apartment. Sliding down the wall, Naruto buried his head in his hands, and wept…truly wept for the first time since this morning when he found Kakashi's head.
An overwhelming feeling of emptiness descended on Naruto. He had never imagined life without Kakashi…never thought he would need to. Kakashi was always so…dependable. He was one of the first to be somewhat kind to Naruto, after Iruka, of course. And…he was a prodigy for Kami's sake…he should have been smart enough to keep himself from being killed, damnit!
"He wouldn't want you to sacrifice yourself. He would want you to live life, full of the springtime of youth." Guy's dull voice wafted over Naruto. Looking up, he saw Guy's sad eyes. Saying nothing, Naruto put his head on his bent knees, wrapping his arms around his legs. Guy sat down next to Naruto, patting the young man's shoulder.
"He loved you but feared saying anything because you seemed so happy with Hinata." Squeezing his hands against his knees, Naruto wished Guy would shut up. He didn't need to know this. It would not fix anything. It just ripped open the wound in his heart, making him kick himself with how stupid he had been for not making a move of his own. Fresh tears leaked out, as he said nothing, silently sobbing.
Naruto, I am sorry. Would you change anything if you could? Kurama's voice curled through Naruto's brain.
You aren't funny. You know I would. Esp…especially now, after Guy.
But would you give up everything? Would you give up an eternity for him, even if you were never able to be with him? Naruto could feel Kurama's curiosity.
You know I would, but I can't, so this is stupid daydreaming! Naruto bit back angrily.
Not necessarily. We can go back in time, you can change one thing, and then we can be thrown back here, to this time in the present. But then…you must live with those changes, good or bad. And…there is no guarantee that Hatake will not be killed.
However…there is a chance I can save him, right? Naruto's heart lifted at the possibility of having Kakashi alive.
Yes, that is always a possibility. But, there is a cost.
A cost? Whatever the cost, I'll pay it.
Don't you want to know the cost?
No, it doesn't matter, let's go.
Well, where do you want to go to change things?
Um…I…I dunno…wait…Kakashi's head was given to me as a wedding present. Are they after me…or him? He frowned as he tried to figure this out. Everything about Kakashi and how he is now goes back to Obito. His personality cemented itself due to Obito…and since Obito wasn't around to help, Rin got the tailed beast and then died… His blue eyes sparkled with determination as the realization cemented in his brain. I want to go back in time to when Obito died…so I can stop it and stop Kakashi from making this enemy.
Are you sure?Kurama sounded concerned.
Yes! How long will I be there?
I can keep you there for about ten minutes.
Right, let's do it!
Sitting up, Naruto took a couple calm breaths, resting his hands on his knees. He wasn't sure what would happen, but he didn't think it would feel real good. Suddenly, it felt like electricity was jolting through his body and he was falling. As his head hit the ground, he let out an oof and looked up at…a cave? Looking around, he heard running coming towards him. Looking towards the sound, he saw three figures coming to him, silver hair in the lead of the triangular formation.
"Run!" he heard from the trio as he suddenly became aware of what sounded like rocks falling. As he ran with the three, he cast shadow clone jutsu, creating three clones, just in case. As he shared his chakra with the shinobi, enveloping them in a red cloak, he was also trying to look for the danger that took Obito's life. Suddenly, rocks started to fall and Kakashi slipped on some rocks. As the brunette turned back, the raven haired boy stopped as well and came running back.
"Go!" Naruto said to them all as he went towards Kakashi, who was trying to get up. As the rocks continued to fall, Naruto called upon Kurama to help him grab the boulders. As the orange cloak billowed from the Uzumaki and the claws came out grabbing at boulders, Naruto protected the ninja and got them out of the cave. Following the shinobi out, Naruto stopped once sky was above them.
"You three okay?" Naruto put his hands on his knees, breathing heavily. Looking up, he recognized the three from Kakashi's photograph. Frowning, he saw the bandaged eye of his much younger sensei. As the three looked up, they all looked shocked.
"S…sensei?" Rin asked shakily.
Realizing that he looked a lot like his father, he knew it was time to go. "Um…gotta go." Naruto smiled and turned, running off. Running deeper into the forest, he climbed a tree, hiding in the upper branches as he tried to catch his breathing.
Good timing. Kurama cheered. Hold on tight.
Naruto grabbed onto the branch as his breathing slowed down. Feeling that electrical jolt again, he landed on his butt and fell backwards, letting out a loud "Ow!" as the night sky shone above him. Sitting up, he rubbed his head and stood. Looking around, he realized he was in the same forest that he fell out of the tree. Shaking himself off he started heading back towards the Leaf. He started to become very nervous. I wonder what has changed.
Kurama did not answer.
Walking through the Leaf, Naruto headed back to his apartment while he awaited the update…and frowned when the keys didn't work in the lock. Turning around and leaving, he sighed. Where do I live?
Before Kurama could respond, Naruto noticed the silver hair he worked so hard to save walking towards him. "Kakashi-sensei…hey, Kakashi-sensei!" Naruto waved at the Jounin.
As the masked man looked up, his eyes smiled. Naruto came up, looking Kakashi over. The silver haired man looked very similar to how he remembered him, except he was in ANBU gear. A hound mask hung at his side, the black mask covering his nose and lower part of his face. "Yo, Naruto. You're up awful late. And what's with this sensei bit?"
Shit. Naruto chuckled. "Well, I just feel goofy…and I needed some air." Naruto smiled happily. Kakashi was alive! In one piece! Naruto was almost giddy. So Kakashi wasn't his sensei. He obviously still knew Naruto. "How you doing?"
"I'm fine, Naruto. I was just heading to give the Hokage my mission report."
Granny Tsunade must be still be the Hokage. That's great! Maybe we didn't have to have a war at all.
"Awesome, I'll go with." Trotting happily beside Kakashi, Naruto hummed. The time travel thing worked great. Life. Was. Good.
The men walked in silence. As Naruto hummed happily, he climbed the steps. Kakashi stopped before the Hokage's door and knocked. "Enter." A soft voice wafted out of the office.
In Naruto's excitement, he didn't register the change in the voice. As the men entered, Naruto skidded to a stop, his mouth hanging open. As he looked across the desk at the blond, his eyes glassed up with tears. In a strangled voice, he could only ask "Dad?"